Description:

Youta wanted a friend, so obviously, he summoned one. He didn't quite count with the fact that he'd summon Mumu, a mighty and evil dragon girl, notwithstanding that due to hundreds of years of imprisonment, she's very needy, very weepy, very clingy, and lonelier than the button "9" on a microwave oven. (Source: MU) Note: Chapter count includes the pre-serialization

Alternative Titles:

300-nen Fuuin sareshi Jaryu-chan to Tomodachi ni Narimashita, 300年封印されし邪龍ちゃんと友達になりました, 与被封印了300年的邪龙成为了朋友, 300-Nen fūin sa reshi jaryuu-chan to tomodachi ni narimashita, Sellada Por 300 Años Y Me Volví El Amigo De Una Dragón Malvada, Una Dragón Que Fue Sellada Por 300 Años Se Volvió Mi Amiga