The Journey Begins with Arknights

The last time traveler, Isheng, traveled through time. He became a doctor in Rhode Island and got a strange system and some strange tasks. Recruit operators, cultivate goodwill, and improve strength. It all seemed to be happening step by step just as he thought. But the danger far beyond the world quietly came to the continent of Terra. And Issei is still working hard to expand his harem and expand his power. "People travel through time just for the big mouth of the Crystal Palace!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.