A Vacation With the Ponytailed Tanning Boy

Kohei has a cousin that welcomes him every summer when he comes to visit, and Kohei always looks forward to seeing how much he's grown over the past year - but this year he came to find their hair was in a ponytail and their gestures like that of a girl. *Notes: \- Originally released on Twitter and later serialized in GENEpixiv. \- Includes 1 extra chapter.*