[Requests Accepted] [アトリエかぐや] お兄ちゃん！！ 射精の管理は妹に任せて！！ [VJ009999]

Seiya Shimizu wakes up in a hospital room. His younger sisters, who were by his side, inform him that he was taken to the hospital by ambulance and admitted for emergency treatment. With no memory of the events, Seiya asks his sisters for an explanation, and they respond with blushing faces. "Big brother, you had a technobreak..." Technobreak... in other words, it refers to heart irregularities caused by prolonged masturbation, and he was found unconscious by his sisters. He was supposed to have stayed up all night working on a university assignment. He has no memory of masturbating... Apparently, the cause was a large quantity of energy drinks he consumed to stay awake the night before. Illegal chemical substances were detected in those energy drinks, which are currently being recalled. The symptoms Seiya experienced were extreme excitement, making it impossible for him to stop masturbating. He was reportedly masturbating until he passed out. It seems that the symptoms will return to normal with time. Relieved, Seiya's sister hands him something. "It's a chastity belt, big brother." Blushing, she continues. "Big brother, if this continues, you won't be able to stop masturbating... So, I've decided that I will manage your ejaculations from now on!" Seiya is left in shock. Thus begins the days where his cute sisters manage his ejaculations. --- **Characters** - **Anzu Shimizu (CV: Minami Imatani)** Seiya's younger sister. She has a caring personality and a strong sense of justice. She is very sweet towards Seiya and cannot refuse him when asked. Since childhood, she has harbored feelings for Seiya that go beyond familial love. Although she knows it's wrong, she decides to manage Seiya's ejaculations because she doesn't want him to die for a pathetic reason. "Geez, big brother, you just can't help it, can you?" - **Mana Shimizu (CV: Airi Himekawa)** Seiya's stepsister. She was an only child until her mother remarried, so she is happy to have a brother and relies heavily on Seiya. She has a strong sense of conviction and takes Seiya's technobreak seriously, agreeing with Anzu's plan to manage Seiya's ejaculations. "I'll take care of you so you can get better quickly!" - **Mio Kadokaki (CV: Ryouko Tezuka)** Anzu's friend. She has known Anzu since childhood and is also acquainted with Seiya. She has a light-hearted and free-spirited personality. She has had feelings for Seiya for a long time and actively tries to seduce him, not wanting to miss this opportunity. "If it's for you, big brother, I'll do anything for you♪" - **Mamoru Manaka (CV: Hime Shibuya)** Anzu and Mana's friend. She attends the same school as them. She is kind and caring but is very shy and gets nervous easily. She is particularly not used to being around boys, so even though she has met Seiya a few times, she gets nervous. She struggles with her large breasts and is conscious of others' gazes. "Um... would you like to go to the library together again?"