This is based on the fanfic of yokai watch shadowside called "A Few Needed Adjustments". This is also based off on chapter 4 of that story where Natsume got grounded only because she was searching for the truth of what she really is. That and she left at the crack of dawn (which is understandable). So here is my miraculous ladybug take on that. Also Disclaimer: I DO NOT OWN MIRACULOUS LADYBUG NOR YOKAI WATCH SHADOWSIDE AND THEY'RE CHARACTERS THEY ALL BELONG TO THEIR RESPECTIVE FRANCHISES AND THEIR OWNERS PLEASE SUPPORT THE OFFICIAL RELEASE .
In hawk moth's lair hawk moth saw a girl named natsume and felt her despair.
"Ah, a girl who just wanted to know the truth of who and what she is but got punished because of it, her anguish, pain, frustrations and despair is perfect prey for my little akuma ."
A white butterfly lands on his hands and hawk moth uses his powers to turn it into a dark butterfly he calls an akuma "fly away my little akuma and evilize her! I now see the truth, the truth of my victory." hawk moth said.
In Natsume's room, natsume was crying her eyes out and stared at a watch she had on her wrist and asked herself "who and what am i?" she asked as she went back to crying.
At the same time the akuma got in her room and landed on her watch and hawk moth spoke to her telepathically.
"greetings yokai Meian, i am hawk moth , you were punished because you were searching for the truth but your mother concealed a great truth from you and your family, so i am giving you the powers of light and darkness, truth and lies, you will be able to disclosure any lies from the past, in return you must bring me ladybug and cat noir's miraculous. Do we have a deal?" hawk moth concluded by asking her.
Natsume stood up and put an evil smirk on her face "we have a deal hawk moth, everyone will say the truth and nothing but the truth. Starting with my own mother, fumika ameno!" natsume said as she was covered in a black smoke and now has pale skin, mahogany eyes and small red highlights. Her hair is light gray styled in bob style. Around her neck she wears a scarf, which looks like the tail of a gray fox. She wears a blue jumpsuit with zippers around her body. As footwear, she wears blue boots that reach up to her waist. Her ankles have cuffs and she wears a red jacket with white linings. Her hands are covered in bandages and she has sharp black nails. She still has her yokai watch elder however it's black and gold instead of it being white and gold. "I'll make my mom tell the truth no matter what!".
And that's what would happen if yo-kai watch shadowside took place in the Miraculous Ladybug universe. Anyway i hope you like this one-shot so until next time, chiao.