Yoshitoki is 22 years old who is graduated from defense forces. He got out as a medical NCO with a rank of sergeant. His background is a bit dark when it comes to school life. His family is caring and loving even though his siblings happens to annoy him at times. When he was a teenager he fell in love with dragons. He loves them more than his own kind and is ready to do anything to make sure they can live their lives in peace from us humans. He would be even ready to take a dragon as his lover.

Yoshi is also a christian. He turned in faith during his confirmation camp but when he turned 18 he left his home church and is currently looking for a new church where he could be accepted the way he is.

Yoshi wears a black long sleeveless coat and a brimmed hat. Under his coat he wears a normal military clothes with army boots. He is usually seen to carry a katana and a pistol. He also has an assault rifle and hand explosives. He is a guardian of dragon kind and he would be ready to die for them.