This crossover has many side stories written by its fans. it may be not proper tagging (at least this artist wont wish), but I tagged as one of the side stories.
ζ±ζΉιθ³½ε£ -γγγ³γγγγ¨ειΊLSγ§γ½γΌγγ―γΌγ«γ- Touhou the iron of dice and sword -Mr buront and hakurei LS are playing Sword World over there-