Is quite fatherly, a humble and gentle soul. Is a bit restless. Shown through his activities in Dokuzuhonsha he is seen as mature as well.
Yashiro is usually very kind and gentle, and he has a reputation of giving easy to understand explanations to things and gives good advice on problems. He tends to get very excited and passionate when his favorite things or hobbies are mentioned.
He is NIJISANJI's self-proclaimed "otaku liver". He has a deep knowledge of both anime and manga, and retro games. He has a deep passion for Beatmania IIDX, he loves talking about the songs in IIDX and just about the game in general.
In streams, he makes a lot of otaku-culture related references, and talks about his hobbies and his interests.