A Saiyan's journey through various anime and manga worlds

Location: An uninhabited area on Earth
Standing atop a high mountain in this region stood an exceptionally handsome man, his slightly upturned lips giving him an indescribable air (I truly can't quite put my finger on it). The tail behind him revealed his identity: a Saiyan. This man was the protagonist of this book: Lu Yi. Lu Yi was originally a teenager from the 21st century. Whether intentionally or unintentionally, he was transported to the world of Dragon Ball, becoming a Saiyan there. To survive and protect his friends, he strived to become stronger, eventually succeeding and becoming the strongest Saiyan warrior in the entire universe. No one was stronger than him, not even a god. However, now he was lost, unsure of his purpose in being there. Therefore, he decided to explore other dimensions. This must be what they call the loneliness of a master!