Affectionate and aggressively earnest, these follow-up messages — dubbed “millennial thank you notes” — are flooding group chats and inboxes with a tidal wave of feelings.

HoYoVerse worked with Bkub Okawa, the mangaka known for Pop Team Epic, to release a collection of virtual Honkai: Star Rail stickers. There are 16 total designs available. All of them are available to ...