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Koumi Haruka
from Rail Wars!
"brown eyes""long hair""brown hair""hair intakes"
Want to collect, style and chat with Koumi Haruka?
Play Waifumaster free
Play Waifumaster free
Koumi Haruka is a character from Rail Wars!. koumi haruka, rail wars! Collect Koumi Haruka as a gacha card on Waifumaster, chat with Koumi Haruka as her own AI persona, and trade duplicate cards on the player-to-player marketplace — free to play.
Chat with Koumi Haruka
Koumi Haruka has her own AI chat persona — she replies in character, remembers what you tell her, and adapts to the tone you set. Sign in to start a private, one-on-one chat with Koumi Haruka.
💬 Chat with Koumi Haruka →How to collect Koumi Haruka
Rarity · Common (N)
- Pull her from the character gacha — soft pity kicks in at 50 pulls and a top-tier card is guaranteed by 60, so unlucky streaks still pay off.
- Raise her mastery by pulling duplicates (N → R → SR → SSR → UR). Each tier unlocks a new outfit, pose set, and expanded chat memory for Koumi Haruka.
- Skip the grind — buy Koumi Haruka straight from the player marketplace or the curated Trader shop with 🌸 hearts.
- Style & chat — once you own Koumi Haruka you can restyle her outfits and talk to her one-on-one as her own AI persona.