So is that the real childhood friend or is it actually his teacher? She looks older, and we haven't actually seen the teacher in his class so it'd be funny if it was his real teacher.
Also, like clockwork, we have the random "non-involved" semi-popular guy trying to crush the MC's self-esteem/relationship that they aren't involved in at all. If it follows the usual route, he'll need to participate in a sport or event that he's never been in before to "prove" that he's relationship material to some nobody.