Dekiai-kun wa Te wo Dasenai

Miura is an ordinary healthy high school boy madly in love with his girlfriend Kare-chan. But Kare-chan is totally sheltered and innocent, so Miura has to always act like a considerate gentleman, even if he wants to hold her hand so very badly. It's an agonizingly cute love comedy about a doting boy's battle between instinct and reason!

(Source: Kodansha, translated)