[Tabuchi-san Chi (Tabuchi)] A story about sticking your dick in a cousin who won't resist on summer vacation [Full Color]

Two young cousins spend their summer vacation sneaking around the house together, their secret affair nearly exposed when a family member wanders too close and praises how well the kids get along. Between frantic close calls and whispered plans for what to do if they're caught, the pair slips away to steamy shared baths where the listless girl calmly offers to wash him every single day. Her blank, unresisting compliance paired with his nervous thrill at every near-miss makes each stolen encounter feel like a ticking clock.