A/N: This is a developmental mega anime crossover story that I would make in the future, based on Super Smash Bros. for Wii U & 3DS. I DON'T OWN ANYTHING. Enjoy.
Update: Switched some anime characters, renamed and changed final mega-attacks and added tweaks.
Prelude
CAST w/h Final Mega-Attacks
Ryuko Matoi (Senketsu Finale)
Mako Mankanshoku (Uniform Delinquent)
Satsuki Kuryuin (Junketsu Dusk)
Ragyo Kuryuin (Ultimate Kamui)
Aikuro Mikisugi (Super Teacher)
Luluco (Triggered)
Nui Harime/Ira Gamagoori/Uzu Sanageyama/Nonon Jakuzure/Houka Inumuta/Rei Hoomaru/Tsumugu Kinigase/Shiro Iori (Elite Upgrade)
Barazo Mankanshoku (Mankanshoku-Man)
Kirito Kirigaya (Legendary Swordsman)
Asuna Yuuki (Sleeping Knight)
Shinnosuke Nomura (Action-Mask)
Eren Yeager (Titan Eren)
Sinon (Operation Sniper)
Leafa (Life Arrow)
Philia (Life Arrow)
Klein (Lava Katana)
Llenn (Operation Overdrive)
Artoria Pendragon (EXCALIBUR!)
Rin Tohsaka (The Master of Archer)
Nagisa Shiota (Bloodlust of the Assassin)
Kaede Kayano (Mega Tentacle Strike)
Pina Co Lada (Direct Hit)
Lelei La Lalena (Magic Staff)
Tuka Luna Marceau/Yao Haa Dushi (Pair-Up with Shino)
Illyasviel and Chloe von Einsbern (Magic Kaleidostick Posse)
Ruby Rose (Crescent Rose)
Yang Xiao Long (Ember Celica)
Blake Belladonna and Weiss Schnee (Gambol Shroud and Myrtenaster)
Amanda O'Neill (Shiny Arc)
Diana Cavendish (Shiny Arc)
Zero Two (Strelizia)
Ichigo (Delphinium)
Kokoro (Genista)
Miku (Argentea)
Ikuno (Chlorophytum)
Doraemon (Super Gadget Laser Beam)
Aqua (Purifying Waterstorm)
Saitama (One Punch Man)
Monkey D. Luffy/Nami/Roronoa Zoro/Brook (Straw Hat Pirates)
Yuuri/Chito (Catastrophe)
Chitoge Kirisaki/Tsugumi Seishiro (Beehive)
Lux Arcadia (Drag Knight Harem Attack)
Katsuhira Agata (Kiznaiver Finale)
Karma Akabane (Devilish Bullet Mark)
Rory Mercury (Direct Hit)
Naruto (Ultimate Naruto)
Neko (Strain Legends)
Goku (Super Saiyan!)
Hiro (True Strelizia Apath)
Darkness (Sharpening Swordstorm)
Hamilton Co Lada (Direct Hit)
Izuku Midoriya (One For All/All for One)
Meliodas (Demonic Justice)
Panache Fure Kalgi/Bozes Co Palesti (Rose of Thorns)
Maria (Powerful Witch Climax)
Chris (OC) (Full Blast/Final Edge/Omega Blitz)
The story will begin in the next chapter...