A video game designer got stuck in their game. they use their technical knowledge to earn themselves a place next to the king of the empire with the invention of numerous useful contraptions. The two of them eventually fall in love.
I liked it till the romance kicked in.
+the power of Knowledge
+funny
The high archmage gets assassinated and then reincarnates in the body of the third child of the king of the Hyperion empire.
+OP lead
+well done damsel in distress (not useless while stuck)
+reincarnation
+mage
Leveling Up, By Only Eating!