Mamatomo

Shouta thought summer meant freedom once his sister and her friends got shipped off to mandatory school camps, but his mother and her two closest friends had other plans, dragging him along on a trip instead. What starts as a favor turns into something else entirely once the women decide they need to slim down before hitting the beach and enlist his help with their "diet."

The setup is simple enough: with the sisters gone for the whole break, Shouta finds himself alone with his mother, Kokona, and her friends Yua and Bluette, who use every excuse they can find to keep him close during the trip. Their dieting plan quickly becomes a cover for increasingly bold teasing aimed squarely at him.

As a visual novel, the game moves through this stretch of the summer via dialogue and choices, with Shouta's responses shaping how far things go with each of the three women and which of the multiple endings he lands on. There's a light management layer tied to the diet premise, but the real draw is watching the temptation escalate day by day.