Let's Be a Little Sweet A!

OA Main Shou Sweet and Satisfying Story [Pre-receive "The Little Fool's System Has Gone Crazy" seeking bookmarks~] - Sheng Lan transmigrated from the 21st century to a future ABO world, becoming an exceptionally handsome, long-legged Alpha. Fresh off the boat, he was so captivated by the pheromones of a fair-skinned, beautiful Omega that he couldn't move. At that time, Sheng Lan didn't understand anything and just opened his mouth to bite, directly marking that Omega. He thought biting once was no big deal. Little did he know that was called a temporary mark! According to interstellar iron law, an Alpha who marks an Omega must take responsibility to the end! Sheng Lan: 1551 what to d...