My favorite hasn't been born yet!

I've had no favorite for a long time now. As a fujoshi guy in that state, I was living days lacking in moe. But one day, when I saw a photo of my pregnant sister's baby, I was struck by the same sensation I felt when I found a favorite I could devote my entire soul to. Huh, no way... could my nephew who hasn't even been born yet be my favorite...? I was filled with disbelief, but that night, I had a dream where my nephew, now grown into a handsome man, made advances toward me...!? This is a story about me, who has fallen head over heels for my nephew, watching over his growth while grinning ear to ear—perhaps a nephew × uncle story. ◇◆Story Provider: Tanaka Mizuki◆◇ ※In this story, the protagonist frequently engages in BL talk or fantasies. A wide variety of BL content is scattered throughout, so there may be some tropes that hit reader's particular triggers. Please proceed only if you don't mind such things.