Yoshiyuki Taira, commonly referred to as "Taira", is the first member recruited by Ryusuke. Although he can sometimes seem uncaring or apathetic, he is actually the most mature of the band members and often offers helpful advice. He usually performs shirtless. His main live bass is a white Musicman Stingray (a 1993-1996 model as identified from the type of bridge) with 3-band EQ and a trans bridge.