I never noticed before this chapter ... but the principal is LITERALLY A DICK. I mean he is shaped like a dick, acts like a dick, and probably smells like a dick.
Also, why would you leave your only evidence with someone? Even if you can trust them always save a copy ... for blackmail insurance purposes. That sh!t could come in handy later.
Also also, you snooze you lose big breasted gyaru childhood friend ... should have confessed in chapter 1. Actually, now that I look at this you have so much going against you ... according to manga logic at least. You do have 'first girl dibs' ... wait ... is she the first girl? ... *runs to check first chapter again* ... okay first NAMED girl anyway. There is still a chance ... LOL.