"I'm aware of that", Ryuutaro replied confidently, "And I'm certainly not stopping you."
He could manage in this world alone. He just had to, everything else would be beyond ridiculous.
There was much he had to learn about, too. Even if this world was similar to his, they were far from being the same. Ryuutaro needed to know more and this library should be a good start.

And he needed to practice, too. Even if he'd naturally not turn into a fighter suddenly, Pisces was now very important for self-defense.