If You Want to Practice Magical Skills, You Must First Become a Eunuch

Others who travel through time are either royal relatives or nobles, dragon sons and grandsons. Either a son from a noble family or a virtuous son-in-law. Or, a child from a poor family, who has lost his parents, has an unexpected encounter and an opportunity. At worst, it is complete in itself. And I... Hehe... That would be awesome... Why the hell did I become a eunuch? ! Pure... Pure eunuch...