Perfect World - Chapter 89 - Love Drinking Milk the Most

This is a story of a man named Kim Sae-Jin, who one day, inexplicably wakes up as a Monster. Follow him and his perilous journey to get his life back as a Human, all the while growing even more versatile as a Monster in the process. This should be… complicated, somewhat.

After transmigrating to a parallel modern city, Zhang Yang became an international student overseas.At the same time, he awakened the Kaitō Kid System Template!His very first warning letter boldly pointed at the British Museum, targeting a lost Dragon Nation treasure!Meanwhile, the British authorities officially announced a full livestream of Kaitō Kid’s capture attempt!And so, under the watchful eyes of the entire world, a one-man show began—A dazzling performance that belonged to Zhang Yang.That belonged to the Silver-Winged Magician, Kaitō Kid!

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates

After transcending to a new world, Ye Xuan miraculously obtained the Swallowing System.