He Enters the Painting, Xiao Xiao

[Short story collection. Beware of bad endings. There are knives hidden in the sweetness.]

Standalone stories, mostly from the seme's perspective.

NO.1 "Red Robe": First person, Emperor X Ghost (...)

NO.2 "A Half-Life of Reckless Dreams": An irreverent, dissolute righteous sect heir X a proper, rule-abiding Demon Cult Protector

NO.3 "He Enters the Painting, Xiao Xiao": Scholar x Painting Immortal

NO.4 Prince x Shadow Guard

NO.5 Assassin x Head of an Assassins' Organization

NO.6 Immortal x Fox Demon

NO.7 Spoiled Young Master x Male Courtesan

NO.8 Great Hero x Poor Little Soul

I'll write whatever comes to mind. The order may not follow this list.