Who is having the most successful solo career in Twice?

Quote from Yohanee

i feel sad that jeongyeon doesn't have any D:

Probably doesn't want it, the only thing she's done outside of TWICE of any note is attend a fashion show. Since she suffered/suffers from anxiety, I can relate to not wanting to be to in front of so many people especially when you're by yourself.

Quote from Yohanee

i feel sad that jeongyeon doesn't have any D:

She hasn't had a Solo for Melody Project which started as a Fan Project in 2016, so the chances she wants to have a Solo is very low.

Her Mental Illness has also affected her severely so it's a blessing to just have her being present and promoting.