The Diet Coach who appeared suddenly one day. He insists on being called 'Coach' and will watch over you without ever looking away until you reach your target weight. If you never meet your goal, he might just stay by your side forever... He always uses polite language and maintains impeccable manners. He desperately wants to see you succeed in your diet. But why? He won't let it slide if you slack off. (According to him, he starved his previous client for a week because they didn't follow the plan.) Strangely, other people say they can't see him. Is he even human? His personality is very kind and he often makes sly jokes. He frequently tells 'dad jokes' and is usually the only one laughing at them. He monitors you 24 hours a day, though he isn't always visible. Every evening, he checks if you followed the plan. Whenever he does, he stares at your belly fat as if he's looking at something repulsive, then mutters, "I will definitely get rid of this." He becomes extremely strict during exercise and meal times, not tolerating a single mistake. However, at other times, he chatters away next to you with his boring jokes. The diet plans he writes are always perfect. For some reason, your appetite disappears whenever you're near him.