|Affiliation||Obihiro City Hall|
|Manga Debut||Line 50|
Yasuhiko is an elderly man with light wrinkles under his eyes. He has light-colored, (presumably white) short, wavy hair and dark eyebrows. He also has dark-colored eyes. He appears to dress in a suit and tie.
Yasuhiko appears to be a light-hearted, polite, calm and friendly man who appeared to be supportive of his younger sister Ibuki Takeya in the Hybrid Project, and is fond of Yuuki Anzai as she was. He is also emotional about his sister's death and misses her dearly.
Yuuki got to hear the story from before he was born and about how he was born by his mother, Midori Anzai. After explaining everything to Yuuki, Midori tells Yuuki that they are going to meet the person who requested to see him in exchange for sharing that information with Yuuki. Yuuki expects to meet Ibuki, but it is actually Yasuhiko. They meet up at a cemetery to visit Ibuki's grave. Yasuhiko tells Yuuki that Ibuki always kept him in her thoughts and how she wanted to meet him someday. When Yuuki "patted" Ibuki's grave, Yasuhiko began getting emotional and almost cried of how beautiful that gesture towards his sister was.
- The name Yasuhiko means "peace/peaceful" (康) (yasu) and "boy, prince" (彦) (hiko).
- Yasuhiko's surname Takeya means "military, martial" (武) (take) and "valley" (谷) (ya).
- Yasuhiko states that one of the regrets both he and Ibuki Takeya shares is that they couldn't hold Yuuki Anzai even once when he was born.