|Manga Debut||Volume 2, Chapter 5|
|Anime Debut||Season 1, Episode 10: Another Training Camp!|
In the manga, he disturbed Tsumugi once while she talked with Mio Akiyama on the phone for which she angrily silenced him. This made Mio nervously think about never angering Tsumugi in the future.
Saitō is an elderly man with short hair, big eyebrows and a mustache. He wears very proper clothes with a tie.
- It is most likely that Saitō is related to another servant at the Kotobuki household, Sumire Saitō, since they share the same family name (even the same Japanese kanji) and Sumire stated once that her family migrated from Austria to Japan to serve the Kotobukis, so she has to have at least one other family member who also works for the Kotobuki family.
- The butler working at the café, which is run by an acquaintance of the Kotobuki family, shares many similarities with Saitō, but it is not certain if both are in fact the same person.