Maki (牧)

My husband thinks I’m a “fragile wife who needs to be protected.” —But the truth is, I’m a former mercenary who was once the strongest in the world. Sakurai Misaki fell in love at first sight with her salaryman husband and, while keeping her past a secret, settled into the life of an ordinary housewife. Her days were peaceful, surrounded by her kind husband and son… until she is suddenly asked to go undercover and investigate a child abduction case. What awaits her are feuds among the wealthy elite, conflicts with other mothers, infidelity, and an ever-deepening web of messy relationships. Even so, there is one person who absolutely must never find out the truth—her husband! An unprecedented high-rise apartment × romance × comedy! https://mechacomic.jp/books/265800

Meshiya Suguru is a single IT engineer in his 20s who works in Tokyo. He's good at his job, but he's quiet and doesn 't socialize much, and people in the office are saying that no one knows what he does on his days off. But what he's looking forward to is a solitary hot spring trip!