[Requests Accepted] [ぱちぱちそふと / ぱちぱちそふと黒] 妹とその友人がエロすぎて俺の股間がヤバイ [VJ009451]

Note: (RJ137593) There is content overlap with "My Sister and Her Friend Are Too Erotic, and It's Driving Me Crazy." ■□■ Story ■□■ Due to a decline in her math grades, the protagonist is ordered by their mother to help his sister study. His sister dislikes being alone with him, so her friend will also be involved in the tutoring. The friend, who has a proactive personality, quickly becomes attached to the protagonist because she is good at teaching. She engages in body contact and gets teased by the sister for being flirtatious. Before he knows it, he finds himself being pursued by both of them!? A tsundere little sister in the midst of puberty and a slightly gal-like busty friend of the sister. Which one will you choose? ■□■ Characters ■□■ ● Umiha (CV: Himari) The protagonist's little sister. Tsundere. She likes her brother but feels shy about him being the opposite sex during puberty, causing her to act aloof. She struggles with math and has a complex about her busty best friend. "Ugh, why do I have to... Haa... having my big brother teach me is the worst!" ● Riko (CV: Momoka Sakura) The sister's friend. Busty. She has a mature appearance and personality, acting a bit grown-up. She has a desire to be intimate because she likes him, but it’s not just a free-for-all. "Eh? Did you see? Ehehe, I'm sorry! That's so embarrassing... But if it's you, big brother, it's okay to look."