Ruka, Black Summoner Wiki

Ruka (Luca in the English version) is an apprentice maid in Kelvin's house. Loved by the whole neighborhood. Every day's a blast! Ruka is a young girl with short brown hair and sandy brown eyes. She wears a pink shirt and purple overalls. While working she wears a maid uniform. Ruka looks up to Kelvin and Gerard. She's kindhearted and full of energy.

Black Summoner: Meet the Main Anime Cast

Tate No Yuusha No Nariagari 08 - 176-200

List of new animations starting in winter 2020 - GIGAZINE

Luna (manga) - Yugipedia - Yu-Gi-Oh! wiki

Shin Magnets for Sale

I said what I said : Animemes

The Betrayal Knows My Name - Wikipedia

Monster Girl Quest Discussion and Ideas, Page 59

Black Summoner, Isekai Wiki

Needle: Vinilos

Gcafe Anime News For Otaku 2013 Issue, PDF

Ruka, Black Summoner Wiki