Satoshi (聡) (born October 13, 1984) is a Japanese musician best known for his role as vocalist and lyricist of Girugamesh. His lyrics focus on themes of war, prison, lies and betrayal. Satoshi was the last member of the group to be recruited; the other members contacted him as he was leaving his former act, Venom, after their singer Cyrien left. Satoshi is the only child of a single mother, with whom he shares a close relationship. He was born in Osaka but moved to Chiba at an early age.
- Name: Satoshi (聡)
- Position in Band: Vocalist
- Born: October 13th, 1984
- Horoscope: Libra
- Zodiac: Rat
- Blood Type: O
- Height: 168 cm (5'6")
- Weight: 52 kg
- Hobbies: Movies
- Favorite Food: Yakiniku and curry
- Disliked Food: Carrots and green peas
- Quote: "I'll push on with all my being."
- Satoshi's lyrics focus mainly on the themes of war, prison, lies and betrayal.
- When he is asked about his family, enigmatically just replies as 'no one'.
- He likes Pug dogs.
- Considers that his best and his worst feature is being selfish.
- Wishes to meet Anna Tsuchiya.