Fics like The Scent of Apples and Ash

Alastor has spent decades perfecting the art of control, viewing the biological imperatives of Alphas as a weakness. However, his carefully constructed walls crumble when Lucifer Morningstar arrives at the hotel. The King of Hell is an unmated Omega. And it just so happens Alastor goes into his yearly rut while Lucifer is in the building. Despite Alastor locking himself away and warning Charlie to keep her father away, Lucifer’s curiosity and pride leads him into Alastor’s room. And Lucifer doesn't realize that it's too late to leave.

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