Monster Girl Menagerie - Celestial Archive - Chapter 21 - Undercurrents

Have you ever seen exposing holy vein?

Year 2056, in a city in the Yuan Jiang Su Jin area. On top of a ruined, shattered six story residential apartment sits a teenager wearing a combat vest, militaristic trousers, and alloyed battle boots. On his back is a hexagonal shield and equipped is a blood-shadow battle knife. He sits there silently on the edge of the roof. At this time, the sparkling sky was shining and there was a refreshing breath within the air that blew towards him. However, there was only silence within the ruined, deserted city, with an occasional howl that makes your heart skip a beat.

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

(This is a sweet love story anthology, don’t be fooled by the first story!). Bai Qiuyi has a curse on her body: if she does not take the antidote, her whole body will be as painful as if her bones were being scraped. And her antidote was a specific type of men’s semen.

—The full text is sweet, super sweet, and the sugar content exceeds the standard.