Armed Detective Dazai Wants to Become a Winner in Life [Crossover]

One day, Dazai Osamu of the Armed Detective Agency stood on a rooftop and lamented, "O merciless, heartless heavens, why do you treat me, a man of love and compassion, this way? I've been around for over twenty years, and you still haven't sent me a girlfriend!" Pfft! As soon as he finished speaking, laughter came from somewhere in the distance. Dazai glared furiously, only to see two versions of himself laughing at him from somewhere beyond this world. Dark Era Dazai: I was just thinking of something nice. Like how I have a girlfriend. Boss Dazai: I have a girlfriend too, and she's even willing to die with me. Armed Detective Agency Dazai: ...Are your girlfriends the same person? That's too much! Why?! Am I not good enough?! "I don't believe it. What are the odds? You both have girlfriends, and it's not like they fell out of the sky!" Dark Era Dazai: Actually, she did. Boss Dazai: My girlfriend really did come falling from the sky. Dazai Osamu was utterly despairing over this heartless, unreasonable, and absurd world. So if she's the girl who fell from the sky, couldn't the heavens send one his way too "Master, we're going to land in midair, so get ready for an emergency landing!" "Isn't there something seriously wrong with Chaldea's Rayshift technology?!" Dazai Osamu couldn't help looking up from the rooftop... Ah, there really was someone. He watched as the figure came closer and closer, reflected in his pupils. Could girlfriends really fall from the sky? Theme: If you can't become a winner in life, being mocked by yourself from a parallel world is so hellish you'll die with regrets