東方幻想郷 ("Touhou Gensoukyou") ~ Lotus Land Story
("Fantastic Home Village of the East")
Fourth game of the Touhou series, released 14 August 1998.
A sudden influx of youkai drove Hakurei Shrine miko Hakurei Reimu to climb high above the mountains behind her shrine to a suspicious lake she believes to be the source of the youkai — only to be joined by a former enemy...
This tag implicates touhou_(pc-98) and touhou (learn more).