Sensei Nisshi: Homura-sensei wa Tabun Motenai

Homura-sensei is the frail biology teacher in his track-suit and white lab coat. Hasumi-san is a new home economics teacher, returning to her alma mater to be with him. Their social positions may have changed, but their feelings remain the same. The sweet, awkward romance between them continues, in this new series depicting their love story as adults!

(Source: Pixiv Comics, translated)

Note: Sekaneko started publishing this manga on her blog on September 14, 2021. On September 2022, the manga got licensed by Kadokawa.