ツン×ボテ！～臨月エッチでこの子も私も愛してよねっ♪～

The main character, Shoma, is an ordinary student.
One day, a girl who he loves since childhood visits him and asks him to impregnate her to avoid the unwanted marriage.
Shoma, though embarrassed, cannot resist his feelings and accepts it.
She is now pregnant and they still make love!