Isekai Maou to Shoukan Shoujo no Dorei Majutsu - Volume 8 prologue

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

The mighty heavens exist, ruling over all things. Those favored by its will are granted power and fortune, while those who dared to oppose it perished, leaving none behind. This is the tale of a man who once defied the heavens, underwent multiple reincarnations, and returned once more to the cultivation world. But here’s the twist. This young man remembers nothing of his past lives and is simply a teenager from Earth. How will he who has no knowledge of cultivation and experience in fighting, survive this grim world while being an inner disciple of a lower realm force—or so Xiao chen, the teenager thought till he heard a systematic sound in his mind. [Ding! Host has awakened the heaven’s destined villain system!]

Gu Shishi, a master of traditional Chinese painting, transmigrated into the role of a cannon fodder in a cliché novel.

The cannon fodder female supporting character was switched at birth. She had barely spent a few days with her biological parents before she was tossed into the wolf’s den by those same parents. Her parents, having no heart to send their fake daughter with a heart disease to live a hard life, forced the real daughter into becoming the replacement. Gu Shishi was sent away to marry the big villain – the rumored evil, cruel, and wife-cursing first young master of the Huo’s.

On the very first day that she had transmigrated, she had to face her fated tragic death….

Luckily, she had also inadvertently discovered the path to altering her fate!

— The more gifts she received from the big villain, the longer she could live and the more cheats she would gain!

System:

(Wealthy Housewife System, Initiated!)

(Remaining Life: 8 minutes and 56 seconds)

(Recharge to extend your life.)

(Method of Recharging: Receive Money or Valuables from Wealthy Husband.)

(Received DIOR Bobbin Net Smock x 1, recharge value: $15,000!)

(Received FENDI Black Hooded Sweater x 1, recharge value: $10,160!)

(Received Givenchy Single Strap Mini Floral Print Pleated Skirt x 1, recharge value $180,695!)

(Recharge Successful!)

(Note: 24 hours additional life for every $1,000.)

- Description from Novelupdates

On the desolate barren planet of Rennes, an Asian teenager named Lin Yuan receives an admission notice for the Empire’s best military academy San Romia. So begins his life changing military school career.