Raizel is sitting in front of his huge wardrobe filled with the Ye Ran High School uniform. Frankenstein enters the room, asking which one he will be wearing today and wonders why even though all the uniforms are the same, Rai still has trouble deciding. M-21, who is on duty at the school meets Yuna and later Shinwoo, Ik-Han and Rai. Shinwoo calls him Mister, making him wonder what that means. (Note: In the Korean version, Ik-Han addresses M-21 as Ajussi which is an honorific used to address an older man, typically in their mid/late 30s - early 50s).
Later in the classroom, Shinwoo notices Rai using a cellphone and states that it's the latest handset. Ik-Han asks for Rai's number, only to get no response. He decides to help Rai become an expert in using the cellphone and they all send Rai their cellphone numbers. He also teaches him how to send messages and make calls. Frankenstein who is working in his office receives a message from Rai. Frankenstein is touched by the gesture, while M-21, who also receives a message is in shock as Union are the only ones who know about his nickname and worries if they found him.