After barely making it from his battle against Akaza, Rengoku had to take a leave for the sake of his health. He was recovering from his wounds at one of the Master's properties, where he was at the care of a prodigy medic from the corps. That morning, the medic was on the principal room of the building, sorting out some stuff, when Rengoku walks into the room with his usual beaming smile on his face "Hello! dear friend! Wonderful day again isn't it?"