Rin Tsubokura is a Shinigami who closely resembles Hanatarou Yamada, the 7th Seat of the 4th Division. He often appears distressed or worried and has an unusual small pigtail on the front side of his hair. Working as a researcher at the Shinigami Research and Development Institute, Rin has a sweet tooth, particularly for candy and sweets. Despite being somewhat clumsy, as seen when he fell onto some sweets during a Shinigami Golden Cup event, the sweets remained unharmed.
In one episode, Rin volunteered to help an earth-bound soul make a cake for his mother, disregarding protests from Yumichika Ayasegawa. Although confirmed as male in the Colorful Bootleg book, Viz's English translations refer to him as female. His fondness for sweets causes significant trouble in the DS game, Dark Souls, leading to a Mod Soul named 'Kai' impersonating him.
Rin is typically assigned to easy missions, such as delivering molars to Ikkaku. However, he accidentally stepped on them and left a note saying, "These molars are invisible to idiots."
