Undertaker: “White day” is a day celebrated one month after Valentines day in Japan (and other countries). On White Day, men who received chocolates from women on Valentine’s day are supposed to reciprocate by giving gifts to them.
I finished the Anime now reading the Manga.This show is amazing! Soul is my favorite character in it and a close second is Black Star! And I ship SoMa and Black StarxTsubaki!( I don't know their ship name)