
(╯°Д °)╯╧╧ ヽ(`Д´)ノ Σ(っ°Д °;)っ

SPOILLEEERRRRRRRRRR
The teacher calls the main character at night and comes there crying and bruised, (sashimi-ladys husband had kicked up a fuzz) and after a while, they end up having sex.(yuuuup, that escalated quickly)
The main character starts noticing all these strange things in his behavior (raw fish and rudeness for example) and is worried wether they're just sex buddies. One night (after drinking), main chara sneaks after the teacher into the pools and sees him transform into a dolphin (bottlenose dolphin, 19yrs).
First he thinks that the teacher will kill him or something, but still ends up sleeping with him (aaagain). :D
After that, the teacher asks him to come to extra lessons at night, where he reveals his dolphin form and swims with him. He lets him ask any questions he has, which reveals that both the pink guy and teacher are really dolphins, that can turn human.(+sex agggainnn)
The teacher would like to find his care-takers(from when he was a dolphin) and the pink dude got trapped into fishermens nets(as a dolphin) and hates humans and wants "revenge". That is where the chapters ended.
That's my shitpost of a summary for ya!

You're welcome~! Looking forward to more updates! :P
Can't stand tsundere types, but I'm the same ...ヽ(`Д´)ノ