Feels Like Home

Prompt fill for americalupin- Kieren's not quite used to the cold just yet (spend five years with no concept of temperature and it'll take you by surprise!), and decides to go in search of warmth, company and comfort food. Fortunately, Simon is willing to provide all three! Pure, unadulterated fluffy Siren (but with some sexy talk and swearing, I just rate things T by default tbh.)