[Crossover] Please, Gin, Take a Day Off!

P.S. It's finished!!! If you enjoyed it, please save the author or leave a comment before you go, pretty please!!! Zhongye's romance novel, Card Boyfriend, is updating again. I've also started an original romance novel, A Few Things About My Return from Infinite Space. Feel free to check it out if you're interested. Mwah! Hey, everyone! Rumor has it there's a mysterious black organization whose members dress in black all day, use alcohol as their code names, and go around causing trouble. They assassinate government officials, extort wealthy businessmen, and blow up cruise ships, bullet trains, and Tokyo Tower. That's right, Gin is the one who's worked his fingers to the bone and devoted himself tirelessly to the organization, earning all the credit for these great deeds. Maybe even the world couldn't stand it anymore, so it sent me to take him on vacation. Oh, you want to know who I am? I'm Gin's childhood friend! Possible worlds we might visit: Magic Kaito, magical-girl shoujo manga, a modern-day Gintama crossover, Bungo Stray Dogs, and so on. Theme: