Request: [Actress] Please tell me when you find the Rainbow (Original Soundtrack)

I’m looking for this ost soundtrack. It would be apreiciated if someone happens to have it and upload it. A little backgound of its origin. This is a ost of the h-game 虹を見つけたら教えて (I’m nto too sure if i can put different language in forum but it mihgt help search). The english translation of the game is called please tell me when u find the rainbow, as stated in the title. This ost is from a H-game, just to inform. Another note about the ost is that it is given to people who preordered the game and thus isn’t sold in stores. Tnx for your help.