I tried to get original faniture and cloths of the CASINO event without buying any items which help us get the opportunity to try a lot. The lot named Gacha is popular in Japan but is regarded as notorious because of arbitrary manipulation.
I chose an area and a slot machine then tried. After lots of trials and errors I obtained a wig, a knit cap, a bag and cloths for free during the event. But I couldn't get a rare objet.