Cordelia: I really want to see a crossover book of Miraculous Ladybug and Undertale

Cordelia: so I'm making it a book idea

Cordelia: enjoy
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Book name: Inlove with a Firefly Hero (Au sans x Female! Reader)

Book about: Y/n Moonflower is the holder of the Firefly miraculous, her family went on a vacation for some months, y/n is a shy and kind girl but one you know more about her she is Layback and Calm but she very overprotective of her friends, Akuma attack was every common around paris and it up her her and her partners to stop them. No one in y/n Family tree didn't know about y/n being a miraculous holder, she love learning about Soul Traits and how to summon or see a Soul Trait. She knew her Soul have Kindness and Hope. One day while playing on her laptop she hear thumps and went to check them out only to meet Skeletons

Love interest for y/n: Ink (Inktale), Error (Errortale), Lust (Underlust/Lusttale), Horror (Horrortale), Raspberry (Swapfell), Blue (Underswap), Dream (Dreamtale), Nightmare (Dreamtale), Dust (Dusttale), Killer (Killertale), Cross (X-Tale), Hip-Hop (Dancetale), Red (Underfell), Fresh (Underfresh/Freshtale), Fell (Flowerfell), Outer (Outertale), Classic (Undertale), Reaper (Reapertale), Geno (Aftertale), Sci (Sciencetale), Pirate (Oceantale), G (Echotale), Epic (Epictale), Trainer (Trainertale/Poketale)

Y/n Friends: Alya, Adrien, Nino, Alix, Kim, Ivan, Mylene, Luka, Rose, Juleka, Max, Marinette, Nathaniel, Mark, Jake Summer, Winter Lovesnow, Tucson Firelight, Arizona Warmfire, and Sabrina

Y/n kwami look:

Y/n Miraculous: A Hair Clip

Y/n kwami name: Luzz

Y/n kwami eats: Grass (y/n keep a potted plant full of grass and when she isn't next to the potted plant she pluck some of the grass and put it in a Ziploc bag)

Y/n Outfit (they never change there outfit in MLB):

(In this picture I like: 2, 4, 9, 11, 12, 7, 6, and 3)

(And in this picture I like: 2, 7, 14, 10, and 8)

Y/n Hero Outfit: a Yellow suit with brown that the legs and have wings on her back with are a brown color, her mask is yellow with stars on it, and her ribbon that the hair of her hair become a yellow color with stars on the bow (Cordelia: yeah she loves to hair a bow while her hair is in a braid)

Y/n Family: Amy Moonflower (Mother, Alive), James Moonflower (Father, Alive), Iris Moonflower/Warmstone (Older sister, Alive), Kiosk Moonflower (Younger Brother, Alive), Lluvia Moonflower (Twin sister, Alive), Chuck Warmstone (Iris Husband/Brother-in-law, Alive), Sammy Warmstone (Nephew, Alive), Ruby Lightstar (Aunt/Amy sister, Alive), John Lightstar (Uncle/Ruby Husband, Alive), Jade Lightstar and Kade Lightstar (Twin Cousin, Alive)

Y/n Hair Color: Half H/c (Left) and Half Ruby Pink (Right) (cordelia: ok so the father have H/c while the mother have kinda like a Ruby Brown hair color with pink in it)

Y/n Hair Style: always have her hair in a braid

Y/n Eye color: E/c (Left) and Ruby Green (Right) (Cordelia: the father have Ruby Green while the mother have E/c)

Y/n Hero Name: Hotaru

Y/n Hero Power: Light Beam (can blind the Akumamatize Victim for about 1 minutes and have only 5 minutes to change back)

Y/n favorite things: Singing, Hanging out with her friends, learning about soul traits, babysit her Nephew, Cooking, Her Family, her Friends, Nightcore, Puns, Soda

Y/n dislike things: Chloe, Lila, Hawkmoth, Akumas, seeing her friend Akumamatize

Y/n soul trait: Half Kindness and Half Hope (Hope is kinda a pale Pinkish-white color)

Y/n Friend soul trait: Bravery (Alya), Kindness (Adrien), Integrity (Nino), Patience (Alix), Bravery (Kim), Justice (Ivan), Kindness (Mylene), Integrity (Luka), Kindness (Rose), Perseverance (Juleka), Patience (Max), Determination (Marinette), Kindness (Nathaniel), Perseverance (Mark), Justice (Jake Summer), Patience (Winter Lovesnow), Bravery (Tucson Firelight), Integrity (Arizona Warmfire), Kindness (Sabrina)

Y/n Non-Friends soul trait: selfishness/opposite of kindness (Chloe), dishonest/opposite of Integrity (Lila)

Y/n family soul trait: Hope (Amy), Kindness (James), Half Perseverance and half Kindness (Iris), Half Hope and half Integrity (kiosk), Half Patience and half Hope (Lluvia), Bravery (Chuck), Half Bravery and half Perseverance (Sammy), Justice (Ruby), Creativity (John Lightstar), Patience (Jade Lightstar), Integrity (Kade Lightstar)

Who found out about y/n secret: Ink (he walk in on y/n transforming into Hotaru), Dream (When he was looking around Y/n room to look for her he seen Luzz sitting in the potter plant pot), Error (he isn't stupid when he saw the news about Ladybug, Chat Noir, and Hotaru he look close that Hotaru to see she have the same hair color and style as y/n) Nightmare (same as error) (Cordelia: plus they all kept it a secret for Y/n Sake)

How y/n got Luzz: When Y/n and her twin was running late for the first day of school they see a old man about to get Rob and since y/n twin is a girl who want to not be late as told y/n just call then cops and walk away while y/n went to help the poor old man which leads to y/n being the holder of the firefly miraculous and fought beside Ladybug and Chat Noir

Y/n House: the house is a big house about 3 feet tall with about 12 rooms (one for the parents, one for the older sister and her husband, one for the twins sister, one for the Younger brother, one for the aunt and uncle and Sammy, and one for the two cousins) plus they turn the basement into a sleepover room just incase if y/n and her friends have sleepovers. Also the 12th room is a big storage place
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Cordelia: I really want to see this Crossover now!