This drama is adapted from the manga of the same name created by Akiko Higashimura. The heroine Kurashita Tsukiumi (played by Kyoko Yoshine) is an otaku who loves jellyfish and came to Tokyo to realize her dream of becoming an illustrator. In the old apartment named \”Tianshuikan\”, she met a group of otaku friends who share her niche hobbies and are not good at socializing with others. One day, in order to save a jellyfish, Moon Sea got acquainted with the princess-like pseudo-girl Koifun Kuranosuke (played by Seto Yasushi), so the story of the otaku and the pseudo-girl unfolded…