[FGO Crossover] Teacher Mei Is Studying, So Stop Nagging

+++ Merlin never went down the route of learning human emotions. He tried to learn about the versions of himself in parallel worlds, but never understood why. He never hoped for a Happy Ending, either. He simply completed the tasks the world gave him to perfection, in silence... #The Ultimate Emotionless Tool# And so, the course of an entire world changed. Help Arthur become a worthy king. Sure. No problem. (300 years later) Here, take this Eternal King who has united the world. #What Happens When a Dream Eater Uses 200% of His Power as Support# !!! I said to help Arthur! Not to go off-script! (Merlin, aggrieved) But I did a good job... And so, the World’s Will, with a massive headache, marked this world as a Singularity and tossed Merlin into other worlds to fix their problems... Here’s a new task. Go learn about humans. P.S. This is just a really weird idea I had, so I put all the characters I like into it. At its core, it’s a journey starring an unconscious, emotionless Mary Sue. #Teacher Merlin is completely indifferent, so there’s no CP, but there will be mutual comfort and warmth# #Suggestions are welcome, but I don’t like arguments# #OOC is on me, and there are lots of headcanons# Note: This story mainly stars “the Merlin described above.” Characters named in the Singularity titles are major supporting characters who will receive extensive focus. Interludes mainly feature the characters named in their titles. Merlin may not appear at all, or may only appear briefly. These short, bonus-like stories are mostly just for fun, and usually appear after an arc is complete. First Singularity: King of the Endless Sea of Blood, Fate/stay night (Cu Chulainn Alter) Second Singularity: The Joy of This World, Shared with You, Fate/Apocrypha (Nightingale, Charlemagne) Third Singularity: Jujutsu Kaisen 1.3.1 The Song of Erased Fantasy: I Am the One Who Proclaims Heaven’s Mandate (Taigong Wang) #Facing hardship with our enemy, clashing with our allies in battle# 1.3.2 The Chapter of a Thousand Years: You, Bound in a Silk-Caged Prison (Ashiya Douman) 1.3.3 ??? ??? Singularity: The World in the Eyes of the Gods, Fate/Zero (Eternal King Arthur) #This time, Arthur goes to find Merlin himself. Arthur has a one-sided crush on Merlin (emphasis)# Final Singularity: ??? Interludes, This Is a Ruined Land: 1. Questions at the Door: Birds and a Silver Key (Abigail x Bungo Stray Dogs) #A red phantom wanders above the world. The fates of others are entirely different# 2. The Eastern Empire of a Thousand Years: The Undying Dragon of a Hundred Cities and Ten Thousand States (First Emperor x ???) 3. Aurora, Shooting Stars, and a Flying Chariot: The Chariot That Beheld the World (Achilles x Saint Seiya) #I’m planning to include the princess, the little prince, Yu Huan, the count, and others. I’ll pretty much write whatever comes to mind. Maybe asking readers to pick favorites in the comments actually works (it really does!) Theme: A story about someone who wants warmth