Yuichi Ikegoshi is a male Idol part of the SIPS (Boy Band) who was first introduced in Chapter 52 on Palau as part of the TV Crew where he is one of the hosts for the TV show.
Yuichi and Kouhei Imamura look-a-like, so when Yuichi got injured, Kouhei replaced him as the TV-host by offering him an autograph of Yurika Muranaka.