Oh, is this series a light novel? I'm assuming that's where you got the info from; if so, how far along is the light novel? Cause I might consider reading the LN instead, mostly cause I'm really impatient LMFAO. I am glad to hear that this series (at least from what you've told) seems to truly focus on the coming-of-age aspect of these highschool kids, trying to learn about themselves and others in a more deep and meaningful way, and even self-reflecting at times. It's much better than how earlier on people kept saying "oh the teacher's gonna come back" or some shit like that (though I'm not opposed to it if it does eventually happen; just glad that the series is more meaningful than what people theorized it'd be www).
No LN or WN as far as i know, seems like an original manga story, what i know is from the raws, which after chapter 23 are hard to find (currently chapter 30-31 I think), I am considering subscribing to the publisher's app to read the story.
It is a good read so far, currently MC has a new love interest in a mature woman, the owner of the coffee shop Kaede and Tsubasa's date, it seems that it is unrequited, so while MC may have to experience another heartbreak, he wasn't taken advantage of and an Adult behaved properly (as far as I've read, this is currently the arc in the newest chapters so I don't have confirmation)
The Teacher hasn't made an appearance, but I don't doubt she will comeback somehow.
It is a good read so far, currently MC has a new love interest in a mature woman, the owner of the coffee shop Kaede and Tsubasa's date, it seems that it is unrequited, so while MC may have to experience another heartbreak, he wasn't taken advantage of and an Adult behaved properly (as far as I've read, this is currently the arc in the newest chapters so I don't have confirmation)
The Teacher hasn't made an appearance, but I don't doubt she will comeback somehow.