It would take a long time for Hati to learn that Hati was once his mother's familar pass down to him to ensure he stayed alive. Perhaps that's why the two are very close and see each other as brothers. Hati cares deeply for his familiar to the point it didn't take long for Hati to awaken him from his slumber. Most of the time, Remi is often hovering over Hati, glaring at anyone he feels could hurt the young man. While Remi can be aggressive at times, Hati knows that it's mostly out his desire to keep Hati safe at all. It's something Hati cherishes.

While Fenrir might come off as being a bitter, snarky asshole, Hati will always tell you that Fenrir is a good man (and father). He knows the reason why he acts comes from years of nonsense that he dealt with and never holds his attitude against him. He knows that deep in his heart that he's a good person no matter what he says. Whenever he sees his father upset, he will do everything he can to bring a smile on his face or make his life a tad bit easier in some way. He hates the idea of disappointing or upsetting his father in any way since he feels he deserves the world.

The moment that Hati saw Karol in the Hot Springs with the rest of party after hearing all the things they done was the moment that Hati gained a crush for Karol. Since then, he has done his best to try to follow whatever adventures he went on while supporting him on whatever task he wish to accomplish. Whenever he's around Karol, Hati gets flustered around him especially when he compliments him. However, with Karol, he feels a sense of ease when rambling about the things that he like that his father may not be interested in at all.

Ignoring the fact that Yuri seems to really enjoy convincing Hati's father to commit crimes, Hati carries a fondness for Yuri. Well if you also ignore the fact Yuri really enjoys teasing Hati about his feelings for Karol alongside some other things. Other than that though, he does look up to Yuri as being an older brother/second dad (or would it be third considering Flynn?) to him. Upon learning the truth of what happened to his parents, Yuri was the first Hati could open up about his feelings regarding the whole thing and didn't make him feel like a monster for what he did.

Flynn reminds Hati of Cael, meaning that Hati is automatically required to like him as a result. After all, Cael is the closest thing he has to a mother with the constant back and forth between himself and his father. Hati admires how honorable, kind and lawfully good that he can be. To him, he's the perfect embodiment of what it means to be a knight and being overall a good person in general. He wants to be like him and often does his best to listen to whatever advice that he gives him. If his dream wasn't to become a Vesperia guild member, he would have joined the Imperial Knights.

Hati is no different from Fenrir when it comes to his interactions with Repede. As a dog lover, Hati enjoys sitting around with the canine by his side or occasionally sleeping next to him whenever he tires himself out from reading. It's one of the few times you see the puppy-like nature of Hati come out in full force as he tends to sometime act like a child when he's near the dog (ironic given the fact Hati is older than Repede). Hati cites this behavior is most likely a pack mentality and just something that comes from being around dogs.

If there's one thing that Hati loves about Estelle, it's their common love for learning and reading. Whenever they're together, they're usually chatting about whatever new book they find and discussing its content. Sometimes, these talks can last for only a few minutes to hours if no one is keeping a good eye on them. From Estelle, Hati has learned how to better his healing artes through her assistance. This allows him to serve as a secondary healer for the party in a situation where Estelle may be too busy or out of commission in some way.

Rita may be a bit rough around the edges, but Hati isn't bothered by her behavior. Then again, he has dealt with Remi and Fenrir for a number of years so he's probably used to dealing with people similar to them. He has been studying under Rita to learn how to better use his elemental magic since it doesn't hurt to learn under such a genius mage! He likes to show the various tailsman that he makes as they have been something that have interested her given the level of craftmanship, attention and care that he put into the magical items.

Raven is a very mysterious man. While he can be a bit too flirty at times when it comes to cetain people and complain too much about his age, his goofy and wise energy is something that Hati cherishes since he hasn't much of a grandfather figure in his life. I suppose the closet you can get to that is Fenrir's father...but that's a bit too complicated and messy for his taste. Even if Raven doesn't like it, he does a good job at fitting that role for Hati as it is something he desires. Then again, Hati is a very pack oriented person so it makes sense when you ponder it.

Judith's knowledge of Spirits is something that Hati is fond of. He always finds himself asking her questions relating to what she knew about a specific spirit and how they affected the world. Interesting enough, he doesn't really get all that flustered whenever she's being her usual flirtatious self. Then again, he could be completely oblivious to it and Judith never directs that energy to Hati due to him being younger than her. He seems to see her as a older sister in some respects and often listens to her advice when he needs it at times.

Hati has known Cael for all of his life and looks up to him as a mentor and an older brother. Other than his dad, Cael is the first role model that Hati had in his life and is one he always goes to whenever he's worried about his dad since he knows that Cael will be there for his dad. Cael is the one to teach Hati how to uses his familiar in battle and the art of fusion. Cael does somtimes take a motherly role for Hati as he has been lacking in that aspect. It doesn't bother him at all...but please don't tell Cael. Hati would feel awkward if you do that.