They will likely do something similar to other series, like say Demi-chan, where the teacher just tells the kid that its not worth it to persue your teacher, give her a little heart break and end her character arc with a bittersweet feeling with a bright future ahead.
Pretty sure Riku is aware, since he trusts Shunpei about his own relationship, plus he went to the pool with them, his gf and Luluca. This is more of a 5th wheel more than anything
Also, it has been proven time and time again that the biggest reason trans people regret their decision is because of pressure from the people around them, not because of the decision itself. People like you are literally making it worse for them, only to then turn around and think you were...
LMAO She got hit with reality, that's amazing. Its like when boys are told not to grip their penises too hard, or they will develop something called "Death Grip" where you cannot get stimulated unless its really tight.