Last minute is great.
I actually don't like it much, when the rock part kicks in - it gets a bit generic with it. The first verse and the ending are so strong though.
And her vocals are nice.
Zutto... and Walk on the other hand are so boring.
Especially Walk does aboslutely nothing for me.
Zutto... is quite nice to listen to in the background. That cute vocals though...
If I have to rank:
Last minute >>>>Zutto...>Walk
Just a basic single.
But hey, it's a 3 a-side and has good covers - I'm really fine with it!