魔入りました!入間くん 1

A cute comedy

魔入りました!入間くん is a light-hearted comedy comedy focusing on the titular 入間, who's parents summon a demon to trade him for quick cash. All's not as terrible as it seems, however: the demon he was traded to wants nothing more in the world than a cute grandchild to dote on, and thus starts 入間's new life in the demon realm.

Volume one focuses on 入間's new school life and his first friends there. 入間 is the pinnacle of a good child; he can't say no to anyone and is about as pure as they come. Despite his lack of ability or physical prowess, especially compared to his demon peers, 入間 is able to negotiate situations in his own way; half the fun is wondering how he's going to tackle the next unreasonable situation.

In terms of difficulty, this book is more difficult than you might initially expect going on. There's plenty of colloquial language, pared with characters who default to honorific speech and those who start using archaic pronouns and the like. The book does feature full furigana, which helps somewhat, though note that the furigana is tiny in the print version and nigh undecipherable in the digital. You'll see plenty of wordplay with the kanji 魔 substituted into normal words (see the title for a good example).

I don't think I noticed anything too advanced with the grammar; it was mostly the tougher vocabulary that had my attention.