I might be wrong, but I've seen some BTS where Lusi refer to ml's Lil bro as his son, bcs she have been work with the lil actor before as brother and sister, but now she said as mom and son. so I guess the Little brother is indeed shen haomin's son.
i have high expectations because kim da mi is in it
She seems keep her personal and professional life in balance, and rarely active on socmed too. We just can see her through her projects, so I hope She's not going on long vacation again after this lol😆.