That wasn't heartwarming, it was revoltingly pathetic.
And this guy is far from "pure": the usage of the word notwithstanding, and to take it as meaning what people usually intend it to mean, he exploits the bodies of girls around him to power his skills--all while apparently knowing nothing about male-female romantic attraction, but somehow knowing all about (and being able to act on) his lust for women.
And this trash got an anime adaptation. Perhaps the JPs really do like characters like this.