Kuso Rikigaku Shojo to Boku No Naka Ni Byo Tenko Shonichi Ni Kiss Shita Bishojo Ha, Aoharu Daisukina Ningyo Himedeshita (Kineteikkunoberusu) [Light Novel]

[Machine Translation] Shinichi, a high school senior who is still suffering from the chuuni disease, is assigned to collect the memories she desires with Otohime, a transfer student. The sea turns black and mysterious beings walk about.... The world is gradually becoming distorted, but the people live peacefully, oblivious to it. This is Tatsugakai Island, the westernmost island of the Japanese archipelago. The last paradise left in the world. A boy who wanted to be a hero but gave it up. A mermaid princess who meets many people and someday ascends to heaven. Imaginary mechanics is the science of memories. It is the only power that can restore the shape of the world together with Otohime's wish. The girl wishes. She hopes that she will become a real hero. So, you know. So, me and... Let's do something youthful! Let's do something adolescent!

いまだ中二病を拗らせる高校三年生・真一は、転校生の乙姫と一緒に、彼女が望む想い出を集めることになった。海が黒く変色し、不思議な存在が闊歩する...。世界が少しずつ歪んでいく中でも、人々はそれに気付かず、穏やかに暮らしている。ここは日本列島の最西端・辰ヶ海島。世界に残された最後の楽園。ヒーローになりたくて、それを諦めた少年。出会いを重ねて、いつか天へと昇る人魚姫。空想力学は、想い出の科学。乙姫の願いと共に世界の形を戻す唯一の力。少女は願う。本当のヒーローになってくれることを。『だから、ね。私と...青春っぽいこと、しようぜぇー!』