Based on the headcanon that Bright is Merry’s reincarnation. And this tumblr post: https://www.tumblr.com/ihopesocomic/771595758045675520/one-day-bright-sneezes-the-same-way-merry-did-and
(Characters are from “I Hope So”, a webcomic on ComicFury by DetectiveCalico - https://ihopeso.thecomicseries.com/comics/first/#content-start)