1.
Rianuru Drimm is the biological son of Sascenar and Morse, he does not appear in the game, but is subtly mentioned. Technically, he does not "exist" yet, but it is more than certain that he will.

2.
Morse actually gets along well with Ellen and Sato. It's more because.
First, Sato is the messenger of the Vasto Obscuro, so he must interact with him almost daily in a certain way, second, Ellen is a close friend of Sascenar, so it would be quite awkward for them not to get along, yes it is a bit It's annoying that they are related to Morin, but that doesn't mean he would hate them without reason. On the other hand, the knights wouldn't be either, after all, even Morse "dislikes" interaction with his own knights a lot. So it's not all because of Morin, it's more because of something personal of his.

—As for who Sahire is, she is the future daughter of Ellen and Sato who in the future would be Drimm's best friend/girlfriend.

3.
Morse never agreed with recruiting knights in the first place, because this required work and time, adding that this was an idea proposed by MORIN, so it was 100% of his total dislike, in the end. Thanks to Mortavita who managed to convince him to lighten his work, this is how he began to recruit his own knights, among them the most relevant, Reazz, Imil and the special one, Demian.

Fun fact: With the above, it is more than obvious why Morse has more preference for the Guardians than for the knights, and it is because they were his creation and not that of the idiot Morin.

—The reason why Sascenar does not get along with Demian is for the same reason why no one tolerates him, and it is because he does not feel respect towards anyone, regardless of gender, age, rank, superior or inferior, he simply does not feel respect towards anyone other than himself, so his treatment towards others is very between disinterested and passive-aggressive at times.

(o´▽`o)