[Crossover] The Lucky One Is Still Getting Lost Today

Guda, lost in one world after another: "Just let me go home! I'm a man who still has a world to save!!!" [The Serious Blurb] As Chaldea's only active savior of humanity, Fujimaru Rikka has been feeling a little lost lately. As he was getting ready to head to the Seventh Singularity, Chaldea came under an unknown attack, and he was transported to a strange world. He could still summon the Heroic Spirits from Chaldea, but he couldn't get in touch with Chaldea's shut-in doctor or the greedy Da Vinci. His only way to cross worlds again and try to return to Chaldea is to harness the power emitted at certain times by the pillars of each world's story, its protagonists. And yet... "Master, why is this place so weird? There's a guy running at night with his underwear showing and flames on his head??" "Master, why is that guy's head so huge?? He sneaks into other people's homes to steal food, and they don't notice?" "Master, why is there another Saber here? Huh?? Why is there another whole group of everyone here?" Fujimaru Rikka is stunned: Where is this? Where is this? And where is this?! Abe no Seimei: This young man seems familiar. I gazed at the stars last night, and it seems we are bound by an unfinished love from a past life. Fujimaru Rikka: Is this guy, like, mentally ill? Fujimaru Rikka (bottom) x Abe no Seimei (top) [Things to Know Before Reading] 1. The pairing is set, 1v1. The protagonist's name is an original creation!! A fluffy, brainless, feel-good quick transmigration story, with so many, many, many original elements, so expect serious OOC. 2. The author isn't fully leveled up and is writing on passion alone, so some descriptions and plot points may be lacking. Feel free to fill in the gaps! 3. Let's all read in harmony. Thanks, everyone! Sending love and kisses! Theme: Saving the doctor by accident (? ?︿ ??)