I Spoiled The Kuudere Next To Me And Gave Her The Key To My Home summary:

A sweet cross-cultural romantic comedy tale about a lesson exchanger from a beautiful foreign country, and the young man who takes care of her dinner.Katagiri Natsuomi, a high school student who lived alone for two years, finds a beautiful girl with black hair, and blue eyes, who moves into the apartment next door. The girl's name is Yui. It seemed that she really was a noblewoman, and her nickname was “Coup de Lera” because of her nonchalant attitude at school. Natsumi knows that Yui doesn't want to depend on others, but she's actually quite naive, so Natsuomi decides to help her."Today what are we having at night... Fried chicken, huh?""That's right because the price of chicken is discounted today"“I love your fried chicken so I'm really looking forward to it”This is the beginning of a sweet and tantalizing relationship between the girl and boy who lives next door.