A two-player card game about love,
obsession, and bad decisions
Imouto, Osananajimi, Senpai
How It Works
A two-player lane-battler card game of obsessive devotion.
Play cards across three Zones, bluff your opponent,
and compete for the hearts of three yandere girls.
First to 12 Affection Points wins the Timeline.
Quick-reference cards for each zone's abilities, plus a rules summary. Keep them handy during play.
Home, School, and Town. Each zone is a battlefield where players compete for affection. Place them in a row to form the board. Adjacency matters: cards played outside their home zone lose Devotion.
Your hand, your weapons. Each card has a Devotion value (1-8) and a unique ability. Play face-up to trigger abilities at full Devotion, or face-down as a bluff worth 2 Devotion with no ability.
Advanced Mode only. Hidden modifiers dealt face-up under each Zone at the start of each round. They reward specific patterns or alter rules for that Zone. The pool rotates on a 3-round cycle.
Play a card or back off
Want the complete rules, card reference, and scoring tables? Download the official guidebook PDF.
Three zones. Three obsessions. Choose wisely.
Home
She's always been here. She just made sure you can't leave.
"You don't need the outside world, Onii-chan. You only need me!"
Town
She owns the space between places. Every route leads back to her.
"We have so much history together... so why are you still looking at them?"
School
She picked you before you knew you were being picked.
"I'll cut ties with everyone else just to make sure you look only at me!"
Imouto's Domain
Late-night texts. Childhood memories weaponized. The smell of something burning in the kitchen. She's been waiting for you.
Osananajimi's Domain
Convenience store runs. Rooftop sunsets. Commutes that always overlap. Every route leads back to her.
Senpai's Domain
Classroom politics. Reserved seats. Hallway encounters that were never accidental. She runs this place.
Gorgeous cards: Each one a confession, a threat, or a promise.
Compete for affection across three zones. Outwit, outplay, and outlove your rival. First to 12 points claims victory.
By Harry Pham