Nanako is a game character first seen on ZX Spectrum, and later in 2009 on Amstrad CPC en 2009 in two game by The Mojon Twins which we find once again 10 years later upgraded in a compilation called Nanako Chronicles (sold by BitmapSoft) which was released in 2019. Today it is available as a download:

• Nanako in Classic Japanese Monster Castle, a reflexion and platform game, get up the tower in 25 levels to save your sister
• Nanako Descends To Hell, in this action/adventure game, you must find 4 parts on an artifact to save her village