Bludgeoning Angel Dokuro-chan (2005) IMDb
If nothing is done, a man will keep all women on Earth from growing past the apparent age and physical functions of twelve-year-olds, as a mishap in the scientific pursuit of pedophilia. In order to prevent that fateful invention, which would sterilize and doom humankind, an angel keeps the boy who would become that man busy and uneducated, by forcing him into silly wastes of time, like the Watching Glue Dry Club, embarrassing him horribly and distracting him with her body. She also uses a large spiked bat to kill and revive him until he does what she says.
Gross-out comedy, a parody of the magical-girlfriend strain of bishoujo. Large parts of this comedy are ineffective, but the reason why Dokuro (“Skull”) stays with Sakura (“Cherry”) and does what she does is more convincing than the corresponding explanations in less comedic shows like Oh My Goddess! (1993).
References here: Miss Kobayashi’s Dragon Maid (2017).