Thank You for the Invitation. Being in Chewan, There are Endless Challenges!

Marisa is the best in the world!!! A protagonist with a system is presented to the beautiful world of Gensokyo, but he's surprisingly a noob? Eleven, armed with the system, will endure many beatings in Gensokyo... (crossed out) What kind of story will unfold between him and the girl? Incidentally, the system is a scumbag system that loves to remain invisible (crossed out entire sentence). This is a mix of the first and second settings, including some of the author's personal settings.