Warrior Beyond The Stars (Honkai Star Rail x Male Saiyan OC)

It's been a few weeks since the defeat of Moro, and peace has once again returned to Planet Earth, however, for Son Nathan, he feels out of depth, as like in the Tournament of Power, he watch as his father saves the day again, despite the help the others gave, along with himself, in the end, his dad was the one that truly saved everyone. What bugged him, was that his dad has Ultra Instinct, a technique used by the gods, and angels, while he's stuck at Super Saiyan 3, so, wanting to get stronger, he visits Whis in hopes of training, unfortunately, Whis was unable to help, as Beerus needed him for something, while also training with Vegeta himself, and was also training his father, Son Goku. But he did discover something that could be interesting for the Half-Saiyan, while also having a mission for him, and together, they warped to a space station that was currently being attacked. Nathan soon encountered a woman named Kafka, along with a girl named Silver Wolf. Nathan couldn't help but wonder, who are they? And how in the world did they summon a girl out of nowhere? And for the love of Shenron, what is a Stellaron?!