First, than anything, thank you so much to Dalphie for translating the entire series, it was a fantastic read, and age gap yuri is not that common so I really appreciate it.
That said, I feel the ending was a bit underwhelming and rushed. I think that sato had more planned for Madoromi and the sensei after being brought into the spotlight in the previous chapter. The jump to Kaori and Misumi living together and getting married/proposed is too abrupt if really heartwarming. I would've liked to see more of them dating and living as a couple.