About me: Gudako was the last of the 48 newly induced Masters to arrive at Chaldea, and one of the 10 public applicants for the role. They didn't properly wake up from the Spiritron Dive of an introductory simulated battle and sleep-walked to the main hall of Chaldea, where they were found by Fou who guided Mash Kyrielight to wake them. When Professor Lev Lainur came to check the commotion, he recognized them as one of the Master candidates and directed them to Director Olga Marie Animusphere's orientation speech.
Still suffering from the Dive's aftereffects, the protagonist fell asleep during the speech while on the front row, angering the Director and being left out of the first mission. In their personal room, they met Doctor Romani Archaman, who used the unassigned room to slack off after having also been threw out by the Director. When an explosion erupted in the Command Room, they followed Romani to help potential survivors.
Though they found a gravely wounded Mash, they were trapped when the emergency bulkhead closed after Romani left to activate emergency power. With the procedure still ongoing and the Klein Coffins having locked themselves due to low Rayshift success rates, the protagonist were automatically registered as a Master and rayshifted to the first singularity. Prior to the rayshift, the protagonist fought their fear of the surrounding danger to take Mash's hand and support her as she was dying. According to Mash, this display of the innate good in some humans is what convinced her Heroic Spirit to awaken.