MTL - Mr. Yuan is Always Unhappy - Chapter 84

Yuan was born with an incurable illness that left him blind at a young age and crippled a few years later, rendering everything below his head useless. Deemed hopeless and irredeemable, his parents quickly gave up on him, and the world ignored him.

Roy died during a war against the Evil God Cult, but somehow, he returned back in time to 30 years in the past where he was just a boy who awaken his summoning magic.

Chu Nan was just an ordinary student, but because of an accident, he obtained the data collection, analysis and processing ability equivalent to the most advanced optical brain.