For new (and old fans too), After School's best song is actually..

no

I Like "Because Of You" but this is my favorite After School song

I like Shampoo personally

Agree

I also like this but don't think it counts.

Lies, Flashback is their best song and choreo

Because of You is great but when it comes to non subunit songs my fave After School overall song is Heaven. For Korean songs it's Bang.

let me cleanse your wrong opinion away with Shampoo

Jk because of you slaps and hard