300年封印されし邪龍ちゃんと友達になりました 1

[DeepL Translation - needs review] One day, a lonely young man was trying out a summoning technique when a frail, tailed, horned brown girl appeared! What's more, she turns out to be a legendary evil dragon that had been sealed away for 300 years! This is a comedy of friendship between a kind-hearted young man and a dragon girl who really wanted to be friends with humans!

(Translator: DeepL)