Mamatomo

After saving the Literature Club from losing its clubroom by winning an award at a summer contest, Hino Shouta found himself being pursued by his sister Emi and her friends, whom he'd grown close to.

However, the school used the entire summer break for mandatory classes and training camps for students preparing for college or employment, which meant that the older sisters were absent during the summer holidays.

Just as Shouta thought he had gained his freedom, he stumbles upon a scene where his mother, Hino Kokona, and her close mom friends, Nashiki Yua and Arima Bluette, are planning a trip. Before he knows it, he’s half-forcibly dragged along to join them.

On top of that, they plan to go swimming during the trip! Concerned about their figures, the three women decided to start dieting to get ready for the trip. Up to that point, everything was fine… but then—

To get their beloved Shouta to help them with their diets, the mothers begin using every seductive trick in the book, teasing him with thick, intense, and incredibly lewd erotic temptations…!

And so begins the sweet, steamy, lovey-dovey erotic summer vacation with the moms—

Translated from the official website & getchu