|Anime Debut||Season 1 Episode 1: Boy Meets Girl|
|Seiyuu||Kousuke Toriumi (鳥海 浩輔)|
Yashamaru is a young man look like he is in his twenties with wavy blue chin length hair swept to the left. He has gold eyes. He wears a single leaf-like earring on his right ear.
He loves B-Project and wants to help them grow. He is very playful but can get serious when he needs to be.
|However, it is later revealed in the final episode of the first season that he holds a strong grudge against Tsubasa, as he claims that her father killed his family.|
- In the final episode of the first season, according to the editor-in-chief of the Kiss&Hug magazine, the name "Sakutaro Yashamaru"doesn't even exist, heavily implying that it is not his real name.
- In the first episode of the second season, it is confirmed that Yashamaru officially quit working at Gandara agency.