A boy, Toru, whose mother and sister were burned to death due to a fire in the cooking, and only his father and Toru were left alone. It was during this time that his father's co-worker had lost her husband and become a single mother. But Kyoko was a bad woman the opposite of that gentle and beautiful front face! He uses all means to eliminate obstacles and approach Toru's father. For her, the existence of Toru was only in the way. Original Web Novel [Original Webtoon](https://www.comico.jp/comic/7568)

**Original Manga:** [LINE Manga](https://manga.line.me/product/periodic?id=S131458&t=1716166862050), [Mechacomic](https://mechacomic.jp/books/174948)

On the day of his uncle Nakamura Kenta's funeral, the main character, Endo Ritsu, was told an extraordinary will. Half of his inheritance is left to Endo Ritsu, along with this key. Thanks to his relatives who did not object to the will, Ritsu was forced to inherit the estate. Later, he takes the key to the mansion where his uncle lived before his death. He finds a young man dressed elegantly in a maid's uniform in the empty mansion. According to the mysterious young man, his uncle had been working hard on robotics research before his death, and his uncle had created him. Ritsu gives him the name “Sui,” as he says he does not have a name yet. Moreover, to register Sui for master authentication, a switch inside his body must be pressed, and the power source must be his master's bodily fluids.... Ritsu was begged by Sui, who was on the verge of running out of energy, to put his cock deep inside Sui. "I can't stop the thrill...!" "Please come so much inside of me...!" "I'm so excited......I can't stop the throbbing...! I have to cover it..." An android gets pleasured by his new master, and gets sloppy. Enjoy sex with a very naughty housekeeper-type super masochist android.

Ichinose Ren, an elite businessman, is the envy of those around him, not only for his looks, but also for his spectacular sales performance. Surrounded by talented Alphas since his school days, Ren has always reigned supreme among them. He has always tried to be more Alpha than anyone else, hiding the fact that he is actually an Omega. However, the sudden death of his mother and the stress of being transferred to a quieter position within the company have caused him to become physically ill, and he discovers that he has contracted that 'D' disease that is horrible to even speak of. A love story connected from the past between Omega, who looks like Alpha, and Alpha, who can only see a Beta.

Monsters suddenly appeared in cities, attacking humans one after another and quickly becoming a threat to humanity. Recognizing the problem, the government established an organization called "MSS" with the purpose of exterminating these monsters. Kisaragi Itsuki, who overcame rigorous tests and harsh training to join "MSS," an elite unit for monster extermination, finds himself fighting monsters from his very first day of enlistment...! While carrying the desire to "find and save his brother" and the huge secret that "he himself is one of the monsters," he challenges the monsters head-on!!

https://www.cmoa.jp/title/310453/