I heard good stories about this japanese gacha game. Is there some sort of trading possible in this game? Does anyone play it?

What's gacha?

Gacha (or Gachapon) is a monetisation technique used in many successful Japanese free-to-play games. Originally a term used for Japanese Toy machines, this is used to describe games that pull a selection of data, people, heroes, etc. from a large pool at random.

account trading only, but that's banned on d2jsp