Uchi no Ko no Tame naraba, Ore wa Moshikashitara Maou mo Taoseru kamo Shirenai.

This is a touching tale - I am surprised that more people don't like it.

Dale is such a great guardian to this little devil-girl and he fusses a lot about her, although he loves being an adventurer but when he decides, although just a young man himself barely into manhood to adopt this shunned demon girl, we see a different side to him. He soon becomes her protector and the prime object of her affection; as she instinctively is drawn to his kindness and care. A wholesome delight to see her grow out of her self-castigation and bloom to be the sweetest and most cherubic little girl, far more mature than her 8 years old. Yet despite her intelligence, industry and unintended popularity; she remains an earnest and sincere friend to all, granted the rare ability to see the good in others!