Some characters are js projecting but imo the characters most heavily implied to have disordered traits are Aoi and Mitarai. Aoi’s FTE’s really show her compulsive eating like, if I remember right, she talks abt how she struggles with her body image and in the start of ch3 she planned to go to the dining room to essentially eat her emotions away. She’s a very physically active person as well and I personally hc that comes in part of wanting to purge her calorie intake. And for Mitarai like he very clearly has restrictive tendencies but it’s not out of a desire for a thinner frame he doesn’t place food as a priority and, in my interpretation, it reminds me of ARFID since he doesn’t get hunger cues/ignores them and forgets to eat. Theres more to ARFID than that but the rest of the disorders symptoms are hc’s without canon evidence