"I am your father’s brother’s nephew’s cousin’s former roommate."
"So what does that make us?"
"Absolutely nothing."
I appreciate Hayashida's passion, but yeah... Random teacher from another school shows up, why should they listen to him? The problem needs to be solved internally.
Also... yeah, Nikaido needs to be taking better care of himself. I feel like he gets himself so psyched up it negatively impacts his poor health. His personality and physical health do not seem well suited to each other.
Also that revelation about the Kawamoto patriarch (the dad, not the grandpa- grandpa has been clearly stated to be the mother's father)... hell, I was flabbergasted when I heard that line in the anime. I wonder if we're going to see that come back up in the later chapters, after where Season 2 left off, because a dad literally abandoning his existing family for a new girlfriend and making a new family... There's gotta be a ton to unpack there.