Fuyuki as seen in Episode 3
|First Appearance||Episode 1|
Fuyuki lives with his mother, Aki Hinata, and his sister, Natsumi. He doesn't seem to have many friends, so he was eager to befriend Keroro when he broke into their house. Not much else is known about him, besides his general idiocy and dubious attention span.
Fuyuki gets along with everyone in the series. He is arguably closest to Keroro, who has been shown to genuinely care about Fuyuki. In Episode 13, he became Alisa Southerncross's boyfriend, though they haven't interacted since.
By Episode 18, Fuyuki has finally become aware that Keroro is a terrible friend. After Keroro blames everyone but himself for the misfortunes in his life, Fuyuki breaks down in tears at Keroro's selfishness, having gone through mental distress protecting Keroro from this harsh reality. Keroro briefly shows respect to Fuyuki the following day.
"Tear down this school!" - Episode 1
Keroro: "Didn't I tell you? I'm an alien invader."
Fuyuki: "I wanna be your friend too!" - Episode 1
"WHEN DOES THE MAGIC HAPPEN?!" - Episode 3
"Speed lines are cool!" - Episode 5
"Guess what, Sarge? I no longer believe in God!" - Episode 15
- Fuyuki's voice and occasional over-the-top demeanor is a result of Thorn making fun of child voice actors auditioning for various Sgt Frog projects around YouTube, as well as the Fuyuki voice used in one-time Sgt Frog abridging "competitors" Team Keron Star (who disappeared shortly after SFA1R was uploaded). By Season 2 his disposition was toned down considerably and his intelligence gradually increased.
- Fuyuki was chosen in the Sgt Frog Abridged Series Finale podcast as Thorn's, Yoshi's, and Travis' favourite human character.