Narrator, in his little form, toddles around his office, scared and lonely as he clutches his adult selfs suit jacket, that hadn't shrunk or changed like his clothes, like it was a security blanket. He starts sucking his thumb making a soft whimper sound.
(in this au all people are either a little or a caretaker or a mix of both. When regressed the person in question turns into the age they mentally regressed to as it is random though usually within an age bracket. Regressions last anywhere from minutes to a week, any longer and something is wrong. Caregivers act like parents. Edit: regression is also physical meaning actually de-aged for the duration of the regression when I say toddler I mean toddler though littles have vague memories of their adult selfs and when back to adult form the memories are fuzzy like they had just woken from sleep though the emotional bond stays the same. In times of extreme fear, it can cause a little to regress further in age.)