@Suben I had something like that in mind, i know of the Japanese way of thinking in those cases, i can admire it in some cases.
A kid of no more than 16 with talent and promise already having a debilitating injury like that is ridiculous, i know it can happen it is just how life is sometimes, i can even understand why he hides the fact and i dont doubt even in other countries this could happen, teens can be unreasonable and hardheaded in those moments, the one i cant forgive... is the coach really, as an adult, as a professional is it his duty and responsibility to keep an attentive eye on his students' health.
If the manga trope of hardline coaches is at the most only half right it is still too much.