Ancient Sailor's manga / #siscon(1)

Ch.1-1.5: Chiaki lends his umbrella to Aoi, who's rumored to be gay. After Aoi reveals the rumors are true, he's surprised when Chiaki doesn't distance himself from Aoi Ch.2: Siscon Jun is suspicious when his model sister's senpai Haruto wants to get close to him Ch.3: After 3 years, Megu has shown up to Tokyo, to make Shou fulfill his promise of taking Megu's virginity, when he turns 18 Ch.4-5: Ijiwaru Shinai de Extras