Don't Leave Me Alone, Daisy

is a Japanese manga series written and illustrated by Noriko Nagano and serialized in the Tokuma Shoten magazine Monthly Shōnen Captain. The manga was adapted into an anime series from Studio Deen in 1997.

Plot
Reijiro Techno lived in a bomb shelter for most of his mad-scientific and anti-social life, and grandfather tries to rehabilitate him back into society. But one day when Techno sees a girl named Hitomi Matuzawa on his yard, it was instant love at first sight to where he keeps calling her Daisy. While Hitomi rejects him and the name given, Techno still plans to have a relationship with her. He practices with a robot for 3 months but the relationship gets crazier every day from a staring contest to his own haywire attempts from his own mad genius. What's to stop Techno and keep his distance from Hitomi; his family, classmates or probably 2 missiles?