Iochi Mari is a student at Trinity General School in Blue Archive, the school RPG first released in Japan in 2021, where she is known as a kind and devout member of the Sisterhood. Players hear this line when adding her to a formation, as she respectfully calls the player character sensei, the title students use for their teacher. Fans clipped the short greeting and shared it on soundboards and in edits, where its gentle tone made it a favourite shorthand for Mari and for wholesome anime moments.