Koga-senpai is a lost cause.

A senior who is self-deprecating, gloomy, and unsociable, lacking even that touch of attractive melancholy typical of people who have grown accustomed to solitude. Since students retaking courses are rare, I started hanging out with him out of half-pity and half-curiosity, but I was surprised to find that the more we talked, the more any reason to respect him withered away. I'm not trying to be mean. Even without an intentionally harsh critique, simply listing the facts—that he can't handle group work, that he's repeated two years because he has no friends, that he gave up job hunting after one application—makes it sound like I'm badmouthing him. He doesn't dream of becoming a normal person at this point, and he doesn't have the energy to try. Yet, because he's a bit too smart and strangely calm, his hobby is observing himself objectively and writhing like an earthworm in his messy room. Lately, he seems to have leaned into his status as a dropout, flaunting it and enjoying dragging his junior into his trivial whims. No matter who looks at him or how they look at him, Koga-senpai is finished. Dressing up in his 'moratorium' period, brandishing his time-limited citizenship, and repeating stories of epic proportions. The way he looks is a little clever and very stupid. This great fool of a senior has probably never even wondered why a junior with perfectly ordinary common sense continues to stay by his side with a bitter expression.