This appears to be a crossover or custom scenario involving elements from:
Why -Final- ? Kobold released three progressively chaotic demos (Spring, Autumn, and Bloodmoon). -Final- represents the canonical ending, infamous for its “14th chapter lock” – a mechanic where, after 13 stages, the game deletes your save file unless you’ve collected exactly 1,000 “Clover of Ruminants.” Kobold--39-s Knight Of Livestock -Final- -Touhou-ma...