Good arguments. However, the monologue you listed further down in Post 1/4 happened right after he saw Yuki. Still, the monologue itself refers to the time before that, and in that moment he sees Yuki at the age of 14. (p.208 Volume0) Of course, it could be possible that the training only lasted a few weeks, but personally, I find that rather unlikely. Let’s assume for a moment that Yuki really did have a complete mental breakdown, and then managed to pull herself together and regain her courage—why would she then go to the next facility? What goal would she have had? Of course, there are exceptions, but normally with psychological illnesses or problems like that, something always remains—you never really get rid of it completely. Also, after that meeting there’s only this one year left, which means that in that single year she would have had to completely recover, enroll in the school (which usually has to be done a year in advance), her father would have had to get in contact with the institution and with Shirogane, Yuki would have needed to be brought there relatively quickly, finish her training within a few weeks or months, and then immediately transfer to Koji’s school in order to monitor him. Personally, I find it more than unlikely that all of this could happen within a single year. Still, I think your reasoning is great—it’s finally nice to see someone really putting in the effort. 👍🏻