The title of this game translates from Korean as 'Flower Playing'.
The 29th April 1989, NamHan Industry passed KMRB (Korea Media Rating Board) license.
In the '80s Korea was a developing country which had a military administration over the past 20 years. Most people seldom thought about slot machines at that time.
In 1987, First Lucky 8 Lines was released in Korea. Surely it was the best seller in the arcade market until SF2 came out. The real pachi-slot machines existed before, (although prohibited) but Lucky 8 Lines was freely playable in the arcade even with hopper until the government prohibited it.
The success of Lucky 8 Lines met the twist of fate. A Korean TV debate program 'Woman' (KBS) informed about nudity in Lucky 8 Lines. Korea YWCA also reported that this nasty game was played by elementary school students (Korea YWCA does still co-work with KMRB.) In fact, some nudity games existed before but popularity matters.
After this event, the arcades removed Lucky 8 Lines and replaced it with a more moderate one. Kkot Nori was one of the moderate versions of Korean digital reel games (though it was truly a bootleg).