Online Game: Starting With SSS-Ranked Summons - Chapter 165: Submitting the Quest

When Lin Su discovered he could travel between two different worlds with his tamed beasts, the world gained a Beast Tamer formidable in a way that defied science.-----------------------------------Without a system, without a female lead, Crossing Two Realms, original taming beasts

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

After reincarnating, he realized that he was endowed with a miraculous game-like system, which enables him to increase his own stats and transcend the limits of the human body. This system even has a game-breaking ability to save and load in real life!

In this new world that’s akin to a 2-D game, he just wants to enjoy life and head for a glorious future… However, he is quickly embroiled in a complex plot. Can he unlock his true potential and utilize his system to break the shackles that confine him and discover the truth about his previous body’s circumstances?

- Description from novelupdates

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.

Two heroes of the game Legend of Heroes 2 who were rotten waters*.