The author is trying to make the sensei seem like a good person, but she 100% is not. I genuinely dislike her. Not only is SHE toying with hii-chans feelings(the author is trying to defend this by saying the sensei is in love as well, but the sensei is ACTIVELY kissing another guy AND getting married while shes dating someone. This is TOYING.) the girl is a MINOR, and the sensei an adult well into her 20s that is being childish getting between these two high schoolers. Just last chapter when she was "scolding" the mc that hii-chan was her girlfriend felt so ridiculous, like... Sensei. You are a grown ahh TEACHER and fighting with a high school girl over another. Not only could this be a case of grooming, this is well into pedo territory. This "teacher" needs to be fired ASAP.