Souichi is revealed to be a survivor of the previous attempt of colonisation of E.D.N. III by NEVEC and has now grown into a strong leader of the colony. During the events of Lost Planet 3 Souichi captures Jim and plans on executing him. However Mira begs for him not to execute Jim. Later on Souichi tells Jim that NEVEC plans on taking all of the thermal energy off of E.D.N. III and leaving it barren to "die". He tasks Peyton with several missions to gain his trust and prays him not to reveal their existence to the Coronis base.