Yeah but, if an integral member of the team is quitting, the rest of the team should know! Especially the managers! An Absolute Unit
Also, because Akki said he was just on a break, the rest of the team was hopeful that he would come back in time for the competition. When you are part of a team that relies on you, you can't just keep them in the dark that you're quitting! It's a form of ghosting.
Shes more worried about winning games, than his feelings. If he doesn't want to play then leave it at that.