ser·o·to·nin /ˌsirəˈtōnən,ˌserəˈtōnən/ noun a compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter. It has a popular image as a contributor to feelings of well-being and happiness. Oc x Schlatt ⚠︎ This story will contain mature and explicit content like alcohol and drugs such as marijuana. It is underaged as well. I will put a '✩' in the title of the chapter of the that chapter contains it. ⚠︎ (If anyone asks me to take this down because they are uncomfortable I will take it down immediately)