[Takano Saku] The Cutest Girl in the World (Her and My Secret Love) {akanameTL}

Yoshika and her older sister carry on a secret romance in the last place anyone would think to look — the school's empty classrooms — where the thrill of possibly being caught makes every stolen moment between desks more electric. When the older sister returns to her little sister's school as a stand-in for their mother at a parent-teacher meeting, memories of her own sensitive school days and the feelings she once buried come rushing back. Takano Saku's full-color story follows the two through ringing bells and breathless close calls, tracing a forbidden bond that neither sister can bring herself to end.