In the end, Ryan couldn't even complain. He only wanted some tips, not someone to solve the entire situation for him. Not to mention, the last year had been too intense, and Merlin's creator probably fought for a lot longer.
Although it has been a while since he had been there, Ryan managed to cross the barrier of Yahiko's domain without any issue. He probably had heard that Ryan was working with some elder gods. Still, even so, he assumed that Ryan would never return as an enemy. The domain had grown quite a lot. It covered the entire Tokyo and several dozens of kilometers around the capital. Naturally, Yahiko noticed when Ryan entered his domain and Teleported to welcome him.
"It has been a while, Ryan," Yahiko said. "I was beginning to think that you have forgotten your old friends."