Shibata is one of the generals serving under Oda Nobunaga.
Shibata in Kichikuou Rance Edit
He was one of the two non-generic generals serving Nobunaga. He likes to fight, and was irritated when Nobunaga sent him to negotiate a treaty with Leazas. If the treaty does not get signed, he would be very happy and looked forward to fight the Leazas Army.
He is a lolicon.
Shibata in Sengoku Rance Edit
When most retainers deserted the Oda House in its decline, Shibata was among the few loyal ones remaining.
See wikipedia:Shibata Katsuie for the historical character reference.