They never explained how Akira got on the train car that only aliens can enter. Is his mom an alien and he's half human half alien? I'm wondering if tenkuubashi is an alien too, based on the way he talks.
Ooooh, is Akira going to end up being Silver? I was already hooked on this story straight from the start regardless but if that turns out to be true this is probably going to end up as one of my favourite mangas ever! (I like stories where it turns out the 'main character was someone "evil" but didn't know it himself' a lot. Pity it's pretty rare)
If not - well at least he's probably alien without knowing. I also like that too so no complaints there.
Sooo like was it his "potential" that summoned silver or was it the guy controlling it choosing an alien. Man I wanna see how energy and spirit will help our MC now