Ken Soeda

He is the older twin brother of Takeshi. He becomes jealous after knowing Toshiaki is married to Moe. This is after knowing Toshiaki is married to Moe. This is strange, since Ken knows that Moe is not the real Moe he knows. He keeps fooling himself because of this. He later signs a contract stating that once he dies, his body will be used as the next experimented corpse. He desperately wants to go back to the days when Moe was still alive, but Ken commits suicide once realizing he truly cannot be by Moe's side.