|Age||Late 20s - early 30s|
|Debut|| Chapter 7 (Manga) |
Episode 5 (Anime)
Yagi is a tall and thin man. He is mostly seen with a white collarless shirt and dark jeans. Yagi has short blond hair, with a careless face, which Kotori first thought he was kidnapping Tsumugi as he took her places to babysit her.
Yagi first appeared to be a cold man. However, the other characters didn't see him that way. He looks pretty careless, and doesn't talk much, compared to other characters. He's a very nice person, as he watches over Tsumugi when Kouhei needed,
Yagi was friend with both Kouhei and Tae in highschool. He had been watching the couple since day one. After college, he had an unknown job, before opening his own restaurant, after he saved enough money from the previous job for it.
He's seen coming over to Kotori's restaurant helping Kouhei and the group from time to time.