Even Though We're Adults manga volume 1 features story and art by Takako Shimura.

Ayano, an elementary school teacher in her thirties, stops by a bar one day and meets another woman named Shuri. Sparks fly as the two chat, and before the night is over, Ayano even goes in for a kiss. Shuri is intrigued but confused…especially when she discovers that Ayano has a husband! Both Ayano and Shuri are about to find out that love doesn’t get any easier, even as you grow older.