Tatsuya is considered bad by the normal standards used to judge people in the world but his unique abilities put him on a terrifying level.
He is a genius who solved flight magic which was considered one of the biggest problems for over 100 years, he is also working on solving another one of those issues.
He is limited to selling what he had purchased in his previous life.
At first, she wants to kill the MC but because he is a heavenly jewel master he is too precious for the kingdom and she puts the kingdom first.
Official Members: Shangguan Bing'er, Xue Tian'er, Shangguan Fei'er, Wu Yuehan (Little Witch), Shangguan Xue'er (never slept with MC), Dongfang Hanyue
Unofficial Members: Xiao Ruse (Chapter 263), Elf Emperess
He has two sons (never named), with Hanyue and Tian'er.
Once he discovers saint force the story really speeds up, after going to Heavenly Jewel Island subspace for the after the second tournament is when you can tell the ending is being rushed he went from 6 jewels to 9 jewels in the span of a few chapters.
The final battle was lackluster and the enemy was defeated by and random new character. He offers MC a spot as a god and is declined.