Sorry for the late answer<3
But OHH i would love to talk with ya in md about it more deeply,im sure it will be cool<3
But it depends on where,inside of the colony Master is quite cold and distant,just to keep his self image towards Zero to basically not die even a bit from Matt,so towards Sombrius and Tenebris he will treat them as their "inferiors" just cause in my own lore the "master swordmans" are the closeted behind Dark Rimur´s siblings to Zero´s,its not like Master would like to treat Som and Teny badly in purpouse to them if he knows they arent like the rest assholes of the colony,but it wil be hard :,) Matt in other hand in the colony he is sadly the prince,the high status (quite abused from his famil-) so a more "inferior" ones like Tene and Som wouldnt really got a chance if its not by master,but if they talk Matt will be gentle with both of them and i think he wouldnt had a preference! and...preeetty quiet in front of his family,sadly in front from Zero for example,he willl be more busy trembling for reciving a possible punishment,,,(someone help him,,)

BUUUT,((and im sorry for the bibble im writing for a short question NFDUBG-)) outside and all of them free from the colony living a nice live,things are obvius more different and nice! Master will be serious and very calm around them ((maybe he refuses to be a bottom SHSHAHA--)) ,maybe he will prefer Sombrius between them since i see he is the calm boy and had a few similarities on how they care for their loved ones,but he will also treat Tenebris very nicely tooo,well...except when she "behaves badly" wink(¿¿¿¿) or she flirts with Matt,but this last thing would be more an act of silly jelaous sjsj
AAnd for Matt,bro is the bottom of the bottoms,the princed bottom regarless of who AJDBBFHAHA- but he will be quite sweet and would love to please them all,both more intimal and in a normal day,maybe between the two he would prefer sligthly more Tenebris for her cheerful actittude? Idk,i think it would be hard for him to choose,they are both adorablee<33