The single comes out in three versions, each of them containing a different coupling track: Milk version has “Marmalade” (and a music video DVD), White version has “Ari to Satou” and the Bitter version has “Tabako wo Kudasai”.
I really dislike that they are joining the lets-release-10-versions train. Type A with 3 songs and Type B with 2 songs and DVD i can stomach, maybe even Type C with remix/acoustic version. Spreading songs across 3 types so you need to buy all 3 to get all the songs? Thats annoying. I guess i will never get used to it.