Depending on the publisher.
These stories often focus on the power dynamic between a student and an authority figure. The "falling" ( ochita ) aspect usually refers to the teacher losing her professional composure or authority in favor of a romantic or physical relationship. Depending on the publisher
In many series, a "tan" ( kasshoku ) character design is used to imply an athletic, outdoorsy, or "gyaru-adjacent" personality, often contrasting with the traditionally stiff or formal image of a school teacher. In many series, a "tan" ( kasshoku )
If you are looking for this specific release (ID: 120207), you will typically find it on: In many series
The scenario described in the title—a "tan, well-endowed teacher"—is a staple of various sub-genres of Japanese entertainment. Here is why this specific "moshimo" (what if) scenario is so prevalent: