To be honest, I have read this manga before way back when I was in high school, and I wasn't really happy how things ended. Up until now (2020), I still can't get over it .
I really feel sorry for Sensei since I think he just wanted to protect her and be the bigger person (which he should be since his an adult). Imagine if the school found out about their relationship it would cause a big havoc not only to his life and career but also Chun-chun's. After all she is still so young, so full of life like a "curios clueless fish". She is just starting a new life in the city building connection, experiencing new things (adventure), and not to mention she's at that stage when she is getting to know more about herself and what life can offer her.
I think we should also remember (more like telling myself lmao) that sometimes there are things that don't go the way we always want it to be. We have to be more realistic of certain outcomes when it come to making certain decision. Also, we should always be prepared of the consequences that comes along with the decision were going to make.
Life is like a rollercoaster ride.
First, it can be exciting when you're almost at the very peak of the ride.
Second, you start to feel the tension, the thrill, and sometimes regret when the ride comes rushing down.
Then comes that feeling of being uncertain,
if it was a fun ride that you really enjoyed and would like to do it again,
or it can be a traumatic experience you don't want to remember.
-Sorry I feel so down after reading this manga TT__TT.
I'm not even sure if I'm making any sense right now. Also, English is not my first language, so I might have some grammar errors and stuff but hopefully some of you gets what I meant with all of this shiii im talking about hahahahahaaahahah
this will be my first and last reread of this story. Its so painful and realistic. I just want to escape reality and be happy reading manga stories. I didn't expect to come back broken hearted and dazed of whst just happen here lmao

I should really stop now..... BYEE-BYEEE PYUN.....