"Club NEXZ" is the first pre-debut reality show of JYP boy group NEXZ where the 7 members learn about what it takes to be an idol.
Kawashima Seita (河嶋 星太; born November 28, 2006), known mononymously as Seita (セイタ; 세이타), is a Japanese singer under JYP Entertainment. He is a member of the boy group NEXZ.