[Sakagami Umi] Onegai! Minamo-Sensei (Watashi wa Enji ni Naritai)

Stern swim coach Minamo-sensei drives her devoted student Kai to a record-shattering victory, then honors the promise she made him by slipping back into her competitive swimsuit for his eyes alone. What was meant to be a one-time reward careens out of control as his worshipful begging melts her authority, and the boundary between mentor and pupil dissolves into sweat-slicked kissing, desperate grinding, and breathless oral devotion. Every curve-straining moment teases the delicious tension between her resolve to stop and his aching need to go further with her.