2) didnt know we were playing the officer game
3) ok the reader has no clue of the notation of the nick name at all. To them its just a nickname that goes unused and dosent have a purpose. Besides distinguishing him as some ambigious officer from the academy.
4) how would the reader understand this from the first read. You dont bring it up in your story nor mention the removal of bleeding hearts.
5) "high up in imperial court" but they dont mind getting shamed for their son.  They arent going to be high if they have buddy taking Ls with his activism and siding with the unpopular opinion.
6) military law is military law. Im not sure how feudal you think the army is becausd i dont think it really is. The honor and honor duels are all from you, not myke.
7) you portray alot of cadets and already-officers as corrupt. Surpised alex hasent been assasinated for his duels and stuff already. Considering he is the 'minority'
8) or they sent him to be the scape goat to their fuckery.