Family

Katsuki Bakugo

Katsuki is Remi's older twin brother. They are rarely seen getting along, with an exception of life-threatening situations.

U.A. High School

Class 1-A

Ochaco Uraraka

Ochaco was the first person to introduce herself to Remi. Ever since, the two have become best friends, along with Tsuyu, often supporting each other in troubling situations (like in the Shie Hassaikai Arc). Remi was the first person to notice Ochaco's feelings for Izuku and often teases about it. However, this is all playful and she never goes as far as offending anyone.

After the Final Exams Arc, Ochaco invites Remi and Tsuyu over for a sleepover, in which they had a good time. In the Forest Training Camp Arc, Remi shared a room with Ochaco and Tsuyu, while the rest of the girls shared another. In the Shie Hassaikai Arc, Remi, Ochaco and Tsuyu were selected by Nejire Hado for their hero work studies.

Izuku Midoriya

Izuku is Remi's childhood friend. He often calls her Recchan, which the latter doesn't mind. When the two were much younger, Remi would often defend Izuku against her brother, who tended to bully him. She was always confused why Izuku would still admire Katsuki, though.

The two remained close after joining U.A. and were always there to support each other, for example, Remi volunteered to be on Team Midoriya when no-one else (apart from Ochaco) would. Remi would also try to get Izuku with Ochaco, along with her other classmates.

Tsuyu Asui

Remi and Tsuyu are best friends ever since the UA Sports Festival. The two, along with Ochaco, would frequently hang out. In the Forest Training Camp Arc, the three of them would share a room and they had their work studies together with Nejire and Ochaco in the Ryukyu Agency. They were also supporting each other during the Shie Hassaikai raid later on.

Denki Kaminari

Remi and Denki's interactions have been fairly minimal until the UA Sports Festival. They've coincidentally gone to the same internships and ever since then, they've become close friends. They are often seen talking with each other, often laughing at each other's jokes, although, Remi would sometimes join Kyoka when teasing the poor guy. 

During the Vs Hero Killer Arc, they went to the same internship, where they grew much closer. Remi even told Denki about the medication she had to take and why she had to take it, making the latter feel somewhat upset for her. She never told anyone from her class (excluding Katsuki and Izuku, since they've always known), meaning that she puts a lot of trust in him. Even so, Denki promised her that he would always be there for her no matter what happened. 

Denki finds that befriending Remi as the best thing that has ever happened to him and even views her as the most important person in his life.

Tenya Iida

Remi and Tenya have met through Izuku. Remi often teaches Iida internet slang and tricks him into using it daily (for example she once told him that frequently saying 'F' is respectful), only to find out it's informal shortly after. Even so, they are on good terms most of the times.