Everybody with thier Ideology 1. Lt tsurumi with his Comrades revenge ( i forgot the railway war name started with M ) 2. Hijikata with his Hokaido independence + every racial unite 3. Boutarou 😂😂😂 well he wanna be a king if he boight a land and sell fruits over the world + put his face on the money 4. Sofia with her partisan
Funnily enough they arent mutually exclusive like sofia want the money to free the russian empire which would definetly go hand in hand with Lt. Tsurumis idea to get revenge for his comrades in manchuria Hijikata idea of independance is also fairly compatible with <Lt. Tsurumi and Hijikata can also bond with Sofia because both spend years in a prison of a definetly hostile regime. So Botaru is the odd one out.
Ogata: Starved for a fatherly figure Koito: Hero worship Usami: Obsessive Love Tsukishima: Extreme loyalty due to lack of self worth Tsurumi farmed this out of all of them so they become dependent to him, all different kinds of love that breeds extreme loyalty.