[talk] He announced his comeback on March 20th in a handwritten letter.

I thought they would announce a comeback soon since they did a group live broadcast last time.

He announced his comeback to fans in a handwritten New Year's letter.
The comeback date has finally been officially confirmed.
March 20th, the spring breeze is blowing, it's the perfect time
I'm excited because they're coming back as a full group after 3 years and 9 months, and I'm curious about what concept they'll come up with.
I want to see the teaser or pre-release soon haha