You become the Oni Slayer, a name you forge for yourself as you step into a legend forged in fire and midnight. You defeated the infamous Yamakui, a mountain-dwelling monster that descends every red moon to feed on villagers. The tale the village tells is bright: the red moon fell, the monster was slain, and peace returned. Yet not all memories stay clear. Sometimes the armor you wear feels strange, and friends speak in fragments you cannot recognize. With the next red moon only seven days away, safety lingers on a thread—but you are not alone. Heroes never fight alone, and you will face what comes next side by side with everyone who stood with you before.

Onigashima invites you into a story where myth and memory intertwine. The world is steeped in ritual and rumor, where ancient armor hums with echoes, masks conceal hidden truths, and every choice carves a path through danger and wonder. You’ll explore, fight, and recover not only your strength but the bonds you share with your companions. After the battle, there is time to rest, celebrate, and listen to stories told by friends who stood at your side. Yet the journey does not end with the credits. Behind every victory lies a secret waiting to be uncovered, a truth that reshapes what you thought you knew about the red moon and your own past.

Key moments of the adventure revolve around cooperation, discovery, and the sense that the greatest treasure lies in friendship and shared memories. The closer you look, the more you realize that the real challenge is not merely defeating evil, but navigating the whispers of fate that linger after triumph.

What to expect

• Role-play as the nameable Oni Slayer and shape your own legend.
• Face a looming threat: the red moon returns in seven days with ominous consequences.
• Experience a story-driven journey where memory, mystery, and companionship matter as much as combat.
• Celebrate victories with friends, then press forward into secrets that lie beyond the final battle.
• Discover a branching narrative with 9 endings plus 1 true ending, inviting multiple playthroughs.

Onigashima is a tale about courage, bonds, and the idea that heroes are never alone. Will you uncover all the endings and reveal what truly lies beneath the red moon?