Oooh, childhood friend! I dunno though, for all his eroness, the protagonist hasn't made a move on her considering she's more stacked than all the girls shown in episode 1. On top of that he's getting out of touch of the size of her bust, when before he was very accurate in telling so (symbolism for them losing their 'special connection'?). Doesn't bode well for her chances, I must say.
Plot wise though, I loved the 'action'. It's like Mahou Shoujo Ai all over again. XD
Not bad overall, but I liked Hagure Yuusha better as my 'almost pron' anime of the cour.