The release of Sundays playable version in Honkai: Star Rail may happen sooner than originally expected as a new leak makes a previous one obsolete. Sunday has already been introduced as an NPC during the main Penacony story arc and has huge significance. While he has not been seen following the fight against the Harmonious Choir boss in Honkai: Star Rail, it is known he is alive and well. Players have yet to see Sunday again, but his reappearance may occur within a few months.