However, Wakana is hesitant to help Marin with her cosplay, as he's more interested in making traditional dolls. Marin, sensing Wakana's reluctance, convinces him to help her by promising to teach him more about cosplay.

As Marin's cosplay event approaches, Wakana and Marin work tirelessly to perfect the Sailor Moon costume. When Marin finally puts on the costume, Wakana is amazed by her transformation into Sailor Moon.

It's a sunny day in Tokyo, and Wakana Gojō, a high school boy, is excited to spend his day with his friend Marin Kitagawa. Marin is a popular girl who loves cosplay and creating costumes. Wakana, on the other hand, is a skilled craftsman who makes intricate dolls and is passionate about hina dolls.

As they walk through the streets of Harajuku, Marin drags Wakana to a costume store, where she spots a beautiful Sailor Moon costume. She immediately falls in love with it and decides that she needs to cosplay as Sailor Moon for an upcoming event.