noko

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Hey /r/,

Hoping someone can help me out here.

I'm looking for a hentai manga, don't recall the name of it or have any pictures. All I can recall is the basic plot:

>Girl gets syringe from doctor sister
>Takes it to school
>Along with another girl, convinces this boy to come to a barn with them
>Injects syringe into penis, penis gets huge
>Stuff happens

I've tried looking everywhere but to no avail, Help me /r/, you're my only hope!