Sunday Size M (Honkai: Star Rail; Coming Soon)

Sunday (サンデー) is a playable Imaginary character in Honkai: Star Rail.
 
He is a former leader of Penacony and the elder brother of Robin. Once devoted to realizing the ideals of Order, Sunday is a composed, eloquent, and compassionate figure whose unwavering convictions shaped the fate of Penacony.
 
After the dream of the Order came to an end, Sunday set out on a journey across the cosmos in search of a new purpose. Traveling with the Astral Express as a humble passenger, he continues to seek answers while remaining true to the ideals he once held dear. (honkai-star-rail.fandom).