horocca:
https://www.pixiv.net/member_illust.php?mode=medium&illust_id=71919900Overlord fan comic Pixiv /Japanese日本語/転移パロ
Source: 【腐】悪魔と騎士の竜 by ほろっか (also on Tumblr,Twitter)
Imgur Album: https://imgur.com/a/av3xEwv(contains additional pages featuring some light BL)