Title: 四ツ谷くんとはじめくん Yotsuya-kun & Hajime-kun
Creator: 花束葬式 Hanataba Soushiki
Books: 2 volumes, Aug '22 - Jun '23, Fuz Comics, Houbunsha
This is a spin-off of Hime-chan wa Omoi Onna, set afterward. Just as Hajime appeared in Himeno's series as her friend and confidante, Himeno appears in this series in a similar role.
Hajime is a gay man in the 2nd year of university. Yotsuya is a bi man who had been dating Hajime since they were in high school, but they had a bad break up in the 1st year of university after Hajime found out that Yotsuya had 4 sex friends. This series is about how they feel about each other now and whether they might be able to get back together.