When his parents remarried, our protagonist Takashi became step-sisters with Alice, who came from Northern Europe. Although he was confused by her enormous boobs, he tried his best to treat her like a step-brother. However, one day he saw Alice naked and finally lost his patience! So Takashi challenged her to a contest to see which is better, women (boobs) or men (cocks)...!? He kneads her overly-voluptuous, erotic body and makes her cum over and over again in this naughty creampie sex session! 
 
(Source: Fanza, translated) 
 
Note: Published in COMIC BAVEL 2024-11

1-2, 10. 7days; COMIC BAVEL 2024-02, 07, 2025-03 
3. Dekapai Gimai, Shuurai (デカパイ義妹、襲来, Big-Boobed Stepsister Attacks); COMIC BAVEL 2024-11 
4-5. Otome Hatsujougaku (乙女発情学, Maiden Estrusology); COMIC BAVEL 2023-10, 2024-06 
6. Furaretori (フラレトリ, Turned DowNTR); COMIC BAVEL 2024-03 
7. Haru-kun to Yuu-chan (ハルくんとゆうちゃん, Haru-kun & Yuu-chan); COMIC BAVEL 2023-08 
8. Kiss me Peche (きすみーペしぇ, Kiss Me Pêche); COMIC BAVEL 2023-03 
9. Koi ni Ochitara (恋におちたら, When I Fall in Love); COMIC BAVEL 2022-10 
11. Majiiki☆Karura (マジイキ☆カルラ, Magical Orgasm ★ Karura); COMIC BAVEL 2023-06

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