In 2002, in response to many requests, KAT-TUN held their first concert called Okyaku-sama wa Kami-summer - Concert 55man Nin Ai no Request ni Kotaete!!
2002-ben a rengeteg felkérésre válaszul a KAT-TUN megtartotta első koncertjét Okyaku-sama wa Kami-summer - Concert 55man Nin Ai No Request ni Kotaete!!