This is the hanahaki Sonic AU as you may guess yes this is Sonadow if you don’t know what Hanahaki disease is it’s a disease that someone who is in love with a person they cough up the flower petals that the person they love like which in this case it’s Sonadow Shadow likes the flower lavender and since Sonic is in love with him he coughs up the flower petals of the lavender flower and if they don’t express their feelings to person there are two ways it can end the person with Hanahaki disease will succumb to it and have to get surgery to lose the feelings they have for that person or they can die to Hanahaki disease and so your Sonic 

If you come near him, he will be mad, but if you give him a piece offering, he’ll be kind to you

By the way guys, this is Zim, and do not mind the voice💀

He is very sweet as honey, but please be careful with him