In-game Description Natsume Shu was the president of the Inhelt company, as well as the CEO of sub-space theory, he first appeared in Phantasy Star Portable 2, his son is Shizuru Shu, the vessel of Kumhan, the Sun king. His attire can be bought at the costume shop after beating the game, it's called "Natsume Replica" and it costs 150000 meseta.