Until We Meet Again- Hamilton

Philip remembered Laurens from a young age, possibly even for his whole life. The man had seemed to be his main point of happiness. When Philip cried because he was lonely or sad, Laurens was there to comfort him. He talked to him, mainly random things, and sometimes about Alexander, Philip's father. Sometimes even stories about the Revolution. It calmed down Philip, and sometimes made him peaceful enough to fall into a slumber.
The small child had grown to have a bond with John, but the child has also grown to realise that no one else can see his friend.
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Here's a Hamilton fic I wrote a while ago and may finish

It's rated Mature, because there is violence and suicide (when Alex dies, and when John dies, as both were thought to be suicide). It takes place in the time period the musical is set.