|Name in Japanese||雛村壮一郎|
|Romaji Translation||Hinamura Souichirou|
|Debut (Anime)||Episode 1|
|Debut (Light Novel)||Volume 1|
|Voiced by||Daisuke Ono|
Souichiro Hinamura (雛村壮一郎, Hinamura Souichirou), also known by the name Yondaime (四代目), is the leader of the Hirasaka Group, a gang with headquarters in Shibuya. He is affiliated with the NEET Detective Team and usually helps out in cases when needed or under Alice's request.