Hahaha......just like I thought ! That's right, he's cosplaying the original Sazabi (from MS Gundam: Char's Counterattack), and a nice one at that! I guess Zeon's Mobile Suit is easier to make due to the curves which Gundams don't have.
Above the Sazabi, that girl was probably cosplaying Zero from Megaman/Rockman series IIRC.
The name of the female characters from Sword Art Online is Asuna.
Further down, the one that you tagged as "robot" is actually cosplaying Arbalest from Full Metal Panic!
Further up, the one you tagged as "cosplayer group" is from Green Hornet. Both guys cosplaying as Green Hornet (right) & Kato (left). As for the chic, I don't remember.
The cosplayer that you met when you bought mineral water is from Fate/Zero. They're Irisviel Einzbern (left) & Saber (right)
Oh yeah, I know that feeling really well. The streets now has become more and more dangerous compared to my school & college days. Criminals are lurking around for prey almost everywhere at night. Ghosts don't scare me, but those criminals do.
The neighborhood you walk in must be a rather safe place. Over here, it's dangerous to go alone at night, because a lot of people are desperate for cash. And yesterday, I was wearing decent clothes and have a fat bag because of the anime item that I bought. Muggers could easily mistake me for someone who has plenty of money.
Walking home in a dark street? I've experienced that one too. Back then when I got back to my town from Bali school-trip, I walked home at 2 p.m. Nice, isn't it? When I went into college, it's even become a routine, but not as crazy as my previous 2-p.m.-walking-home experience XD.