Yamato's one of the most popular guys at school—the kind everyone knows. His first encounter with Mei is pretty memorable: she kicks him. But after he hands over his phone number, she ends up calling him for help when a stalker won't leave her alone. His solution? Kiss her right there to make the guy back off. Surprisingly, that awkward start leads to actual feelings developing.
By episode 3, they're officially together—Yamato made the first move on that too. He's protective to the point where he's ready to shut down anyone who disrespects Mei, and he gives her a blue bracelet as a relationship symbol.
According to Asami-chan, Yamato's the type who genuinely thinks about others more than most people would. He protects what matters, cares deeply for the people around him, and somehow manages all that even when he's dealing with his own stuff.
Content compiled by AnimeList.moe from publicly available sources.