Are there any recommendations for transmigration novels about the male protagonist in the real world being reborn into another world, being adopted and helping his sister to treat her illness? His sister was terminally ill, and the male protagonist had been running around to help her treat her illness.

I've read a novel before, but I forgot what it was called. It's a transmigration novel.
In the real world, the male protagonist's sister died. He was reborn in another world because he was born differently from ordinary people. His parents wanted to kill him. In order to save his life, they took him to another continent and adopted him. His sister was terminally ill when she was young. In order to help her sister cure her illness, she rushed to find medicinal herbs. He had a ring that could instantly move. He could only use it once a month. He had the martial arts of his previous life. He went to an island to experience the code name mask. He always wore a silver mask. Later, he got a belt with another world in it. He entered the world in the belt to train and find precious herbs for his sister to increase his strength.

Answer 1

I recommend the book " You Can Run Dungeons in Other Worlds " to you. The male protagonist of this novel is also working hard because of his sister. The male protagonist was reborn in another world and brought the system along. He constantly improved his strength by grinding dungeons in the other world and finally reached the peak of his life. Although the plot of this book doesn't completely meet your needs, the male protagonist also struggles with painstaking efforts to treat his sister's illness. I hope you like my recommendation.