Koiseki is a Vietnamese gaming brand created by Koi, a gaming YouTuber who began playing games in 2005 and shares more than two decades of experience through guides, videos, and community resources. Its website offers an Aniimo Wiki in Vietnamese, with character information, stat comparisons, tier lists, maps, team-building tools, and gameplay guides. Koiseki also provides discounted game top-ups, account leveling and item-farming services for Aniimo and Nghịch Thủy Hàn, and intermediary support for email-account exchanges.

The site describes these services as secure and transparent, with account work performed by hand and transactions handled according to agreed terms. Players can contact Koiseki through Zalo, join its Discord community, follow its official fanpage, or watch its YouTube channel for gaming tips and updates. The brand also accepts donations to support its servers and Wiki data.

With a focus on practical information, player support, and connections among gamers, Koiseki brings together reference tools, gaming services, and community content in one destination