Consensual Stalkers

Not the main couple, but they still get plenty of screen time.
After Yuri stops Fujisaki from jumping off the roof of the school and killing himself, Fujisaki begins stalking Yuri and stealing his belongings. Yuri doesn’t really mind and seems to find it kind of endearing.

After Kentarou’s belongings start going missing, he catches his classmate, Ikeda, stealing his shirt. Ikeda admits to being his stalker, and Kentarou agrees to allow Ikeda to continue stalking him as long as he doesn’t steal anymore of his stuff. Eventually he appoints him as his “official stalker” lol. Very cute, 10/10.