Haruno Sakura was 5 when she realises her imaginary friend was not so imaginary at all and resembles the Second Hokage by a lot. Like a lot a lot. In which Senju Tobirama is Sakura's Ghost Sensei. Things change, chaos ensues and Tobirama is once more reminded with the reason he doesn't have kids. Ghost!Tobirama Strong!Sakura [UPDATES ARE SPORADIC]