Agari-senpai is a massive shark who supposedly inspired the movie Jaws. He earned the "senpai" title because sharks reign supreme in the fish world, making him senior to Wakasa. Despite his genuinely terrifying appearance, he's actually just incredibly shy. He stays submerged most of the time with only his dorsal fin breaking the surface—his go-to move when he's feeling anxious. The real problem is his teeth. Whenever he tries to talk, all those razor-sharp teeth show, and people freak out, so he's learned to stick with body language instead. It works for him, mostly.
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