Rem

Rem is one of the most beloved characters from Re:Zero − Starting Life in Another World.

She is a blue-haired oni (demon) girl who works as a maid alongside her older twin sister Ram at the Roswaal mansion. Rem is characterized by:

• Her calm, polite, and gentle demeanor (especially toward people she respects or cares about)
• Extremely strong loyalty and devotion, particularly toward Subaru after he earns her trust
• Impressive combat ability — she wields a spiked flail (morning star) with deadly skill and has powerful water magic
• A deep inferiority complex toward her older sister Ram, whom she views as superior in almost every way

Her personality combines sweetness, selflessness, competence, and — when protecting those she loves — a terrifyingly ruthless side. Rem is widely known for her iconic confession scene and her unwavering "I love you" devotion toward Subaru, which has made her one of the most popular characters in the entire series.