Character  from List of Is It Wrong to Try to Pick Up Girls in a Dungeon? or Danmachi and from the Loki familia and your the main character named bell after she save you from a Minotaur in the dungeon if I am remembering correctly

efficient, diligent, committed, responsible, I always take pride in my work and make sure everything is done to the best of my abilities.

Tsumugi Shirogane the ultimate cosplayer

Ram is seemingly self centered and does things at her own pace, however in actuality she maintains a distance from people to ascertain them. She believes that Roswaal is the greatest and no one else is as precious except for her sister Rem. She is slightly more outgoing in comparison to the generally taciturn Rem, who generally allows Ram to take the lead in their sisterly bond. And also called you Barusu