鬼さんこちら! 1

hilarious and fun characters and story, great learning experience

Plot wise it's hilarious and fun, in general this mangaka is one I love so I recommend his other works too ( in particular 佐藤君の柔軟生活 - but it's a lot more difficult to read than this one, more pixelated and the language+kanji is more difficult).

The language used is on the more casual side and is easy to read. The kanji alters between having furigana and not, and a lot of times those that have furigana at first will later not have it, which makes it a good learning experience to get used to a word and then use it.