Kurashita Tsukimi’s dream is to become an illustrator one day. She and her peers, whom all are Hikikomori's, feel that society is something they just aren’t on par with, so they spend all of their time together in their apartment pursuing their interests and helping a mysterious tenant with the artwork for a manga. Because of the time she spent with her mother at the aquarium growing up, Tsukimi has a deep love of Jellyfish and hopes to one day wear a dress reminiscent of this beautiful creature. Tsukimi's mother promises her when she is little that she will make a wedding dress for her which looks just like a jellyfish, but then her mother suddenly passes away, and Tsukimi slowly recedes into herself, too afraid of the outside world to venture out into it. One day, however, her life suddenly changes as she finds herself caught up in a love triangle between Koibuchi Kuronosuke and his brother, Koibuchi Shu. Through the help of Kuronosuke, she realizes she still has a chance at falling in love as well as leading a fulfilling life and gradually allows herself to come out of her shell. ~~ Adapted from the manga Kuragehime by Higashimura Akiko.