The convenience store is Lawson. I spent some time deciding which drink I wanted, and walked a bit back and forth because I wanted to make sure they accepted Suica cards before trying it. Just look for this, where I placed my card:
In the end, I wish I picked a different drink. Haha.
The game at the beginning is called Pachinko. It was really, really loud in there!
Just a store selling lots of pens and such, and I start walking back to the station to go home.