>>41564157there's a side quest in hammerlocke
a guy asks you for an applin because lore has it that if you gift an applin to the one you like, youll be together forever
He wants to gift one to a girl he likes who is moving away "tomorrow". You give him an applin and he attempts to gift it but backs out because the pokemon isn't his own. Girl basically tells him she will wait for him to gift her an applin he caught himself
You get your applin back and the item needed to evolve it as a reward