MTL - Peerless Twin Treasures: The Ghost Doctor’s Mother is Beautiful and Sassy - Chapter 839 Who is okay to use the fruit of the fairy product to raise a worm

When a struggling graduating student failed his capstone project, he got frustrated and attempted to take his own life. The moment he was about to take a leap, a voice stopped him and handed him a strange box and disappeared.As he got home, he opened the box and saw a strange usb device and a set of strange pills. Later he found out that the USB contained inventions from the 20th to 23rd century, and the pills were a nootopic drug.With this discovery, his life would soon change from an outcast of the family to the world’s powerful businessman that would create companies that would rival top companies around the world.

Sherlock is a new generation Dungeon Lord whose ambition is to become the greatest Devil King and building up the greatest Dungeon in the Underworld.

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

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?