Shock! I Was Summoned at the Beginning and My Master Was the Empress.

[Time travel + portable grandpa + empress] People are in high spirits during happy events. He thought that after possessing the skills of Thunder General Balzebul and others, Chen Xuan could live a happy life, but unexpectedly he became a skeleton. Summoned at the beginning, Chen Xuan became the summoned object of the genius girl. Just when he was practicing hard and thinking about escaping, he fell into another trap and became someone else's slave! And this master is not simple, she is actually the empress who rules a party! In this way, Chen Xuan began a wonderful journey to another world...