Ichika Chan (Japanese: )

Ichika ) is a Japanese trainee under OD Entertainment and can speak English, Chinese, Korean and Thai. She was a contestant in Boys Planet and Produce Camp 2021. She can also sing. She is a talented dancer who can perform the dances from View by SHINee. She is half Korean and a close friend to fellow Produce contestant Uehara Juni.

Ichika is the oldest of the Nakano quintuplets, she wears a single earring which represents her being number 1. She is the one who teases her sisters most, but she is also easily impressed. She was shown to be able to pick up things quickly, although she has an odd habit of sleeping a lot.

She is a very charming girl and has a great way of flirting with men. She is a beautiful and intelligent girl. But she can't stand to see her sisters fighting, so she intervenes often to calm them down. She is the captain of the track and field club and has dark skin with a long ponytail. She has a cunning personality, once attempting to lure Yotsuba into joining the team in order to fill a vacant spot. She's the younger sister of Akihiro.

Yumeko is Ichika's cousin, they are more like sisters and hang out a lot since childhood. They are close and share many secrets. Yumeko is annoying at times, but she does everything to protect Ichika. She is also a sweet and kind girl. She gives her little brother Touka a kiss on his stomach just before bedtime, which he finds adorable.