Home › Onii-chan Wa Oshimai! › Oyama Mahiro
Oyama Mahiro
"brown eyes""hair between eyes""pink hair""long hair""grey hair""ahoge"]
Want to collect, style and chat with Oyama Mahiro?
Play Waifumaster free
Play Waifumaster free
Oyama Mahiro is a character from Onii-chan Wa Oshimai!. oyama mahiro, onii-chan wa oshimai! Collect Oyama Mahiro as a gacha card on Waifumaster, chat with Oyama Mahiro as her own AI persona, and trade duplicate cards on the player-to-player marketplace — free to play.
Chat with Oyama Mahiro
Oyama Mahiro 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 Oyama Mahiro.
💬 Chat with Oyama Mahiro →How to collect Oyama Mahiro
Rarity · Mythic (UR)
- 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 Oyama Mahiro.
- Skip the grind — buy Oyama Mahiro straight from the player marketplace or the curated Trader shop with 🌸 hearts.
- Style & chat — once you own Oyama Mahiro you can restyle her outfits and talk to her one-on-one as her own AI persona.