Blue Protocol: Star Resonance has launched its first anniversary season, Lightchase Oath, with Montegnor Valley, new progression systems, login rewards, limited events, and a confirmed That Time I Got Reincarnated as a Slime crossover still awaiting full details.
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Store links: Blue Protocol: Star Resonance on Steam
Season 4 is live, but the collaboration is still partly under wraps
Blue Protocol: Star Resonance began its first anniversary on October 9 alongside Season 4, which A Plus identifies in its Games Press announcement as Lightchase Oath. The update is live now and brings a new map, new story content, progression changes, limited-time anniversary events, and login rewards. The immediate tension for returning players is that the season’s playable systems are already available, while its headline anime crossover, That Time I Got Reincarnated as a Slime, has only been confirmed, not fully detailed.
A Plus says more information about the Tensura collaboration will be shared through the game’s official website and social media channels. Siliconera likewise reports that the current confirmation consists of an image showing the two logos together, with no announced mechanics, event format, character implementation, reward track, or schedule. Pocket Gamer describes the crossover as the next confirmed collaboration, but also notes that details are thin.
That distinction matters for anyone reinstalling around the Blue Protocol Star Resonance anniversary. There is plenty to do now in Season 4. There is not yet enough public information to plan around a specific Tensura grind, banner, dungeon, costume shop, or limited character reward.
Montegnor Valley gives the anniversary season its new questing spine
The most concrete addition in the Blue Protocol Star Resonance season is Montegnor Valley, a new explorable area named across A Plus’ announcement, Pocket Gamer’s coverage, Siliconera’s event-calendar report, and the Google Play listing. The Google Play description gives the clearest public-facing pitch: Montegnor Valley features canyon landscapes, waterfalls, untouched natural scenery, and ancient ruins tied to a forgotten past.
That same listing names the new main story as “Daydreams & Songs of the Night.” Its setup involves a distress letter from Fafala, strange phenomena in a village, and a mysterious melody heard at night. For players who treat seasonal patches as progression checkpoints rather than costume drops, that story framing is the center of the update: a new zone, new NPCs according to A Plus, and a mystery thread meant to pull returning characters back into Regnus.
A Plus also says Season 4 adds new game modes and mini-games, while Pocket Gamer reports new modes, mini-games, and a variety of challenges. Siliconera’s calendar summary says new story chapters have appeared and that the Phantom Factor cap has gone up. The sources do not provide a full quest list, zone completion path, or recommended power route, so the practical advice is straightforward: start with the new main story, unlock Montegnor Valley access, then use the season’s event calendar and dungeon releases to decide where to spend stamina, time, or squad scheduling effort.
Progression changes are the real returning-player homework
A Plus describes Season 4 as bringing fully upgraded Talents and Psychoscope systems, giving players new ways to progress characters. Pocket Gamer similarly reports an updated progression system with Talents and Psychoscopes. The Google Play listing names the seasonal progression feature as the Matrix Manifestation System, saying Psychoscopes receive new designs and an Imprint system is being introduced. According to that listing, players can choose from different Psychoscope effects and customize their build around a preferred combat style.
For build-minded players, that is the part of the Blue Protocol Star Resonance anniversary most likely to affect daily play beyond the celebration window. A new zone can be cleared and event cosmetics can rotate out, but Talent and Psychoscope changes can alter how classes are tuned, how loadouts are built, and which dungeon roles feel efficient. The Google Play store page describes Blue Protocol: Star Resonance as having nine unique classes and cooperative multiplayer dungeons, so any progression layer that touches combat identity has implications for party play.
The season also adds an “Eternal Radiance” weapon system, according to Google Play. The listing says it offers two ways to obtain new weapons, including upgrading existing weapons or forging new ones from scratch, and adds new weapon skins. It does not provide costs, material requirements, success rates, or time gates. That leaves a practical question unresolved: whether returning players should invest immediately in existing gear or wait until they understand the season’s weapon economy. The safest source-grounded answer is to claim the free anniversary gear first, test your current class through the opening Season 4 content, then decide whether to upgrade or forge once the game itself shows the required materials.
Dungeons, Imagines, and challenge content are rolling through the season
Season 4 is also structured around repeatable combat content. A Plus says players can team up with squads for new Dungeons and Chaotic Realms. The Google Play listing is more specific, saying six new dungeons will release progressively throughout the season, from “Mirror Judgment” to “Cavern Zero.” Those dungeons are tied to Lv. 320+ gear and exclusive seasonal cosmetics, according to the same listing.
The anniversary update also adds 14 new Battle Imagines, with Google Play stating that Montegnor Valley bosses join the Battle Imagines roster and bring new skills, combinations, and strategies. That is an important detail for anyone who skipped recent patches: the season is not built only around higher numbers. It adds new collectible or equippable combat options that may shape rotations and encounter planning, depending on how their skills interact with current classes.
Siliconera reports that a Master’s Trial event is scheduled to begin on November 2, 2026, based on the Season 4 calendar. The same report says new challenges are part of the update and that the Phantom Factor cap increased. None of the provided sources list Master’s Trial rewards, difficulty tiers, or entry requirements, so players should avoid assuming it will be the best farming route until A Plus publishes specifics or the event opens in-game.
Claim the anniversary rewards before chasing the festival checklist
The clearest Blue Protocol anniversary rewards are on the Google Play listing: players can log in to claim Rose Orbs ×1,111, a Lv. 320 Epic Gear Chest, and more. The listing does not state an end date in the supplied text, but it identifies the first anniversary celebration as officially underway and connects the rewards to Season 4. Returning players should claim those login items before focusing on longer grinds, since free currency and a Lv. 320 gear chest are immediate account-value gains.
The limited-time Seabreeze Festival Celebration is also live, according to Google Play, with activities including Starlight Fireworks and Fireworks Trivia. Siliconera’s calendar summary adds that Dawn to Dusk Wishes, Seabreeze Festival Celebration, Starlight Fireworks, and Fireworks Trivia I are all happening now. It also notes that the Season 4 Pass I Fantasy Mage pass is active, alongside the Magical Love limited outfit and the Tonight, Depart by Stars limited mount.
The sources do not say whether the outfit and mount are earned through play, sold directly, tied to a pass, or obtained through another limited system. Google Play lists the game as having in-app purchases, including random items, so players should check the in-game acquisition method before spending. From a completionist perspective, the order of operations is simple: collect the login rewards, review the event calendar, finish any time-limited festival tasks that grant unique cosmetics or currency, then move into dungeon progression and Montegnor Valley exploration.
How the Tensura crossover fits into Star Resonance’s anime-collab pattern
A Plus has confirmed an upcoming collaboration between Blue Protocol: Star Resonance and That Time I Got Reincarnated as a Slime, the anime series also commonly shortened to Tensura. Games Press includes a synopsis of the anime’s premise, in which salaryman Mikami Satoru is killed, reincarnates as the slime Rimuru, and tries to build a nation where different races and species can live together.
What A Plus has not confirmed is how the Blue Protocol Tensura crossover will work inside the game. Siliconera says details are extremely slim and reports only the logo confirmation. The outlet adds that this could mean cosmetics or other in-game elements based on characters such as Rimuru Tempest and Shizue Izawa, but that is Siliconera’s stated possibility, not an announced feature list. No source provided here confirms playable Tensura characters, a story quest, dungeon boss, gacha banner, event shop, mount, outfit, voice content, or release date.
Siliconera does place the announcement in a broader pattern, reporting that Tensura appears to be the third of three teased anime events from March 2026. The outlet identifies the earlier collaborations as Shangri-La Frontier in April 2026 and Fairy Tail during the Season 3 update. That history makes another anime tie-in unsurprising, but it does not answer the key player questions yet. Until A Plus publishes the crossover structure, the sensible move is to treat Tensura as an upcoming anniversary-season promise while prioritizing the rewards and events already live.
Platforms, naming discrepancy, and whether now is a good time to return
Blue Protocol: Star Resonance is available on PC, Android, and iOS, according to Siliconera. A Steam page exists for Blue Protocol: Star Resonance, and the Google Play listing shows the Android version with over 500,000 downloads, a Teen rating, in-app purchases, user interaction, and in-game purchases including random items. The Google Play listing describes the game as an anime-style multiplayer adventure MMORPG set in Bandai Namco’s PROJECT SKY BLUE IP, with social features, cooperative dungeons, and nine classes.
There is one naming inconsistency in the supplied reporting. A Plus, Pocket Gamer, Siliconera, and Google Play all refer to Season 4 as Lightchase Oath. MMORPG.com’s supplied text says Season 4: Lighthouse Oath. Given that the publisher announcement and storefront listing both use Lightchase Oath, that is the supported name used here, while the MMORPG.com wording appears as a conflicting report in the source set.
For lapsed players, the Blue Protocol Star Resonance anniversary is a better return point for systems catch-up than for Tensura planning. The live update already offers a new map, story chapters, festival events, login rewards, Lv. 320 catch-up gear, new dungeon progression, weapon changes, Psychoscope customization, and Battle Imagines. The crossover is real, but its rewards and mechanics remain unannounced. Log in now if you want the anniversary claims and Season 4 foundation. Wait for A Plus’ next official post if your only reason to return is Rimuru, Shizue, or a specific Tensura collectible.