The anime better go past this, though even without it being a proper ending it perfectly achieves what any good getter ending should do, get you hyped for what's next.
I remember when I wanted to get my earing done, I was scared of that too. Pretty much all places here do it with the needle but I at least wanted to use the gun thing so I ended up finding a super girly spot while on a trip, and it was expensive as hell but it got the job done.