Thomas transmigrated to an isekai world.

The previous owner of the body was depressed for not being strong like the younger sister. When Thomas took his place, he found that his younger sister loved him very much, his parents were very loving, unlike the parents he had.

However, as soon as he fell asleep, he came to a strange dimension. He was killed by a man who appeared to be a pirate.

To his surprise, despite the great pain he felt when he died, he was still alive...