Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 4 - Intermission: Friends of Yuni

Scheming female assassin transmigrated to become the weak Eldest Miss, her story is wonderful and stunning, attracting peach flowers to blossom open. Cold calculating emperor? Genius bad crown prince? Insidious happy-go-lucky prince? Gentle physician? Ice-cold mystery male? Who is her true love? Haha, but she only eats, definitely will not take responsibility! Beautiful men be careful!

- Description from Novelupdates

Chen Zhao can summon demons and see Death.

A Filipino man died in an illness during the latest pandemic and found himself transmigrated in a world of magic, in which he received a dinging sound in his ear.[You have transmigrated in the body of: Nameless: abandoned newborn humanAbandoned what?[God of Undead: ??? Have bestowed you his blessing by giving you the name [ Sophia Demiurge] ]I'm a girl?

A lecherous army special task force soldier from 21st-century Hong Kong is selected to travel back in time, choosing to go to the Chinese Warring States Period. Unfortunately, the time machine runs into an error during the experiment. With no foreseeable way to return to the present, he must use his combat skills and knowledge of history to thrive in his new life in the year 251 BC.