After passing some time alone, pondering over the said things, Arthur left the ARK and returned to the garden, or what's left of it.
With his goals achieved and nothing to do here, he prepared to leave the tomb as he had zero interest in getting the manual or any of the treasures here. He had countless of them in Zodiak's storage, which had all the things he amassed in his ancient adventures.
The tricky thing was that there was definitely people looking for him. His heist on the Kang Treasury was flawless in many aspects but the Kang Family wasn't a fool.
This happened in their territory and the third floor of the Treasury was robbed clean, they surely were not going to let things end like that. One way or another, they will locate him which is why he began by changing his body, he got rid of the young man's body and possessed the body of the woman, which he used just when he entered the city.