>>536204021
Shadow and Maria's story is heavily based on the romance manga/anime Please Save my Earth, and Maria's VA is purposely the same as the herione's.
Maria says she loves Shadow (aishiteru) in Sonic x Shadow Generations, which is very serious almost always used romantically, and virtually unheard of between an unrelated male and female without romance.
Maria says she loves Shadow before dying in the 2nd Shadow manga chapter, the exact same words Cosmo says to Tails when she dies in Sonic X.
Descriptions in the manga say Maria loves Shadow multiple times, and it's mentioned Maria is Shadow's loved one.
Shadow stutters when Maria hugs him in the manga.
Shadow blushes when Maria compliments his appearance in SxSG.
Shadow and Maria's creator ships them heavily and scours the Shadaria tag near-daily. He retweets them kissing on the lips and getting married.
Shadow and Maria's creator refers to SA2's story as "the story of Shadmari".
Sonic Team employees compare Maria stroking Shadow's face sensually to Beauty and the Beast, while featuring art tagged Shadaria.
Naoto Ohshima likes Shadaria fanart.
Kazuyuki Hoshino likes Shadaria fanart.
Sega Korea's account likes Shadaria fanart.
Yui Karasuno drew Shadaria fanart.
Romantic Shadaria art is featured on Sonic Channel almost every month. Sonic Team comments call it "very romantic" and the opposite of platonic. They say Shadow and Maria shared many "firsts" and confessed "feelings" to each other.
Maria reads Shadow the Tanabata story about two separated lovers, one mortal and one immortal, poetically.
Shadow fantasizes about Maria in ladylike shoes in one of the SonicPict images.
The '06 bio says Maria was Shadow's dearest girl and the closest he's ever felt to love.
Shadow and Maria's dynamic is described with the same words as Silver and Blaze's dynamic in JP.
Holding hands under the stars in a field of flowers is very romantic, and normies auto-assumed they were lovers.

You can't see why someone would ship them?