As Ram's last surviving family member, Ram cares greatly for her twin sister. Even as kids, Ram always encourage her whenever she felt inferior or depressed. When Rem died in one of Subaru's loops, Ram fell into a fury, adamantly chasing Subaru down for suspecting him of being involved with Rem's death. However, after Rem's existence is erased by the Authority of Gluttony, Ram completely forget about her sister and did not feel bothered by her falling into a coma.
Ram has some kind of past with Al, as his normally carefree attitude changed when he learned that she was still alive, and he later expressed his disgust at the thought.