Miller Greyler, Isekai Ojisan Wiki

Miller Greyler (ミラー=グレイラー, Mirā = Gureirā) is a character in the Isekai Ojisan series. weakness to being slapped in the face: Ojisan's shapeshifting magic was able to subdue Miller by changing into a former teacher and repeatedly slapping Miller in the face.

Isekai Ojisan, Chapter 37.5 - Isekai Ojisan Manga Online

Takafumi Takaoka, Isekai Ojisan Wiki

Ricardo Markfeld, Isekai Ojisan Wiki

Yousuke Shibazaki, Isekai Ojisan Wiki

Alicia Edelcia, Isekai Ojisan Wiki

Hagen Regfalgen, Isekai Ojisan Wiki

Ricardo Markfeld, Isekai Ojisan Wiki

Laylia, Didn't I Say to Make My Abilities Average in the Next Life?! Wiki

Kingdom of Tils, Didn't I Say to Make My Abilities Average in the Next Life?! Wiki

Isekai Ojisan, Chapter 48 - Isekai Ojisan Manga Online

Raiga Straiga, Isekai Ojisan Wiki