can't eat anything but feelings of love/affection. he uses those that come to him as he pleases but when the uke, who's very much genuinely in love with, chases after him, he ends up starving himself because he didn't want to eat anyone else but he also didn't want to eat the uke because then he risks eating their memories with his love. it works out in the end and the uke has enough love to give and remember
Ai wo Kurau Kedamono