For the context: Asuka 120% (あすか120%) is a completely SFW (Safe For Work) all-female fighting game series developed by Fill-in-Cafe (later Success Corporation after Fill-in-Cafe went bankrupt) and published by FamilySoft. It is set in a school where members of school clubs fight each other in a fighting tournament. Originally released on the FM Towns home personal computers in 1994, it was released for multiple systems through the years.
In April 2022, there’s a sudden announcement from the not-famous dark fantasy web game called Eden's Ritter Glenze (エデンズリッターグレンツェ), which will collaborate with Asuka 120%. Considering Eden's Ritter Glenze has an alternate NSFW/R-18 version, they confirmed that a few heroines of Asuka 120% will have their own NSFW scenes in Eden's Ritter Glenze. Unsurprisingly, it became a controversy among Japanese Twitter users.