Participants' ig accounts

Taeheon: @taehonest (https://www.instagram.com/taehonest/)

Usak: @saksaksaksack (https://www.instagram.com/saksaksaksack/)

Ryota: @ryota_32_ (https://www.instagram.com/ryota_32_/)

Alan: @takahashialan (https://www.instagram.com/takahashialan/?hl=fr)

Dai: @dainakai (https://www.instagram.com/dainakai/)

Ikuo: @iku.o323 (https://www.instagram.com/iku.o323/)

Shun: @shun._.nakanishi (https://www.instagram.com/shun._.nakanishi/)

Kazuto: @kaz._.too (https://www.instagram.com/kaz._.too/)

Gensei: @gensei.am (https://www.instagram.com/gensei.am/)

thanks!!
who is Ikuo?

The zero follows from Dai and Shun are keeping me intrigued.

 CH_CH:

thanks!!
who is Ikuo?

He was introduced in episode 6 as a new contestant 

 silknetstockings:

The zero follows from Dai and Shun are keeping me intrigued.

They can't spoil anything with them on the show as an active interest. I bet they were told not to follow to keep it a mystery for viewers that like to investigate ahead. I'm guessing that's why none of them really have pictures as well