One day, Wakana was planning to use the school's sewing machine to work on a doll but coincidentally, Marin comes in and spots him.

Thanks to Marin's encouragement and support, Wakana steps out of his comfort zone and embraces his love for crafting. When Sajuna cosplays, Shinju assumes the role of photographer, using a DSLR camera borrowed from their father. Before they hang up, she explains her younger sister takes her pictures and agrees to meet at a restaurant. Dari segi penampilan karakter tersebut memiliki kulit berwarna coklat, gigi bergerigi dan pakaian yang cukup terbuka.She has a habit of being embarrassed by seemingly insignificant things, while being woefully unaware or uncaring of clearly more humiliating factors. Suddenly, Kitagawa removes her clothes and shows Gojo a cosplay outfit of a video game character she has been working on, which he inadvertently berates. Karakter tersebut cukup populer, dan banyak dari teman-teman sekelas Marin Kitagawa ternyata juga mengetahuinya. He also praised the show's English translation as "go[ing] the extra mile to portray [Marin's] personality through the subtitles, capturing her gyaru idioms and even random gibberish that she says out loud. In this cosplay, she wears a traditional Japanese maid outfit, which was beautifully designed in kimono style.

Overtop the shirt is a long, ruffled, white collared shirt piece that buttons up to her neck and resembles almost a maid apron, with a little white bow underneath the first button at the neck. For her cosplay, she dons a black wig resembling Soma's haircut while having her own hair tied back. Despite still being in middle school, Shinju is quite tall for her age with a rather mature figure, directly opposing her older sister, who in fact looks much younger than her.

Dia adalah pribadi yang sangat ceria dan menyukai hal berbau otaku, hingga pada akhirnya terjun ke dunia cosplay untuk kesenangan alias hobi. Juju declines Kitagawa's proposal to do a group cosplay until Kitagawa and Gojo offer to split the studio fees.