Imouto no Tomodachi ni Guigui Semerareru Hanashi 3

The protagonist finds himself overwhelmed by the aggressive advances of his sister's friends, Yui and Risa. The two girls fiercely compete for his attention and affection, initiating a highly charged threesome. During the encounter, they take turns performing oral sex and having intercourse with him, both eager to be chosen. To settle their rivalry, the girls suggest deciding who gets to keep him based on who gets pregnant first. The story concludes with a tense cliffhanger as the protagonist's sister returns home and notices her friends' shoes in the entryway.