Kase-sanKase-san.

Kase-san (Japanese: 加瀬さん) is a Japanese yuri manga series written and illustrated by Hiromi Takashima. The series was serialized in Shinshokan's Hirari magazine and Flash Wings web publication between August 2010 and March 2017 and is published in English by Seven Seas Entertainment. A sequel series, titled Kase-san and Yamada (山田と加瀬さん。