help!!

i've read this a long time ago and i forgot the title.

- seme is a teacher, uke was a substitute for another librarian who had a broken leg or hip (??) at the same school where seme is working

- during one chapter there was a flashback, uke and seme used to be friends, seme was a senpai so had to leave first and uke already helps at the library even on his student days, they usually hang out at the library.

- uke confessed but seme rejected him because he feared that while his feelings may not change for the uke, but the uke's feelings might change since 1 year is still a long time, but if he's given another chance to meet uke, he'll be the one to chase and tell uke that he loves him - that's what seme told their principal/homeroom teacher during his last exam.

- after uke confessed, seme kissed uke as a "farewell gift" which was a very dick move.

- uke was still mad about what seme did (kiss) and he kept remembering how seme played with his feeling.

- on one scene, they were at the library and uke got fed up with the seme and told him hurtful things and even did the same exact thing that seme did to him - he kissed him and repeated the same words back to seme

- seme gave up and for uke it was about time to leave the school because the teacher who broke their leg is coming back.

- uke fell asleep at the library and was very late, i'm not sure if seme was there but i know that's where he realized he still loves seme.

-they got back together and uke ended up working for another month or got transferred already since the teacher he's subtituting for broke their hip again??

please help thanks!!