In a cosmic game of chess, the gods draw human minds into their arena. A fresh apostle and an ancient deity join forces to challenge celestial puzzles and divine jesters.

Takuma is an office worker who is taken care of and coddled by his senior team member Shiori, who is a gorgeous, profoundly kind, loving, and diminutive woman. Takuma certainly hopes that she's not doing it out of duty - but her joy of doing so increasingly exposes her feelings.