Minato & Kakashi

(MinaKaka, lemon, yaoi, etc. Some things from the show and manga have been changed. I also don't own Naruto.)
Kakashi was put into a team with the future Hokage, the prettiest girl from his class: Rin. Oh, and Obito. Kakashi is 15 now and is beginning to wonder about the changes in his body. Looking to smut books doesn't help and only piques his curiosity. His father and all other family are dead, so who can he look to for guidance to answer his most embarrassing questions? Who else but Minato-Sensei of course.