Misute♡naide Daisy

A boy named Techno has spent most of his life in a bomb shelter with his grandfather, both of whom are highly intelligent. One day, he encounters a girl named Hitomi in his yard and becomes infatuated with her, calling her Daisy despite her protests. After three months of working on a robot, he attempts to begin a relationship but struggles to interact with her. His efforts to claim her lead to complications, as she does not truly belong to him. His intelligence leads to several dangerous mishaps that nearly harm Hitomi, such as increasing her size to fifty feet, constructing a laser-shooting substitute teacher, and creating a large slug. Additional elements include a teacher in unusual costumes, a harmless rebel boy targeted by Techno, his mother, and brother, an overprotective grandfather, Hitomi's friends, an android seeking Techno's death to protect Hitomi, and two missiles he befriends, along with the rest of the class.