Even if My Only Strength Is Water Magic, Having Modern Knowledge Should Be Sufficient, Right?

Before I knew it, I was living on the streets, and it feels like a whole different world from yesterday’s memories… I must survive! When I go to sleep and wake up, it’s another world, with magic. There’s gotta be something more, right? Usually… Even if not royalty, at least a commoner. What I have is pain, magic, and modern knowledge. But here, common sense is different. Even if there’s a girl clearly punched in the face, no one helps, and things like human rights don’t exist. At least, at least I wished for a roof…