Zippers?

It was late at night, and midoriya was mindlessly browsing the internet, but he found an interesting post ^skin zipper, bulk sized! Get 50 zippers and get plenty of women! And the best thing is! It’s free!^ (skin zipper?) he clicked the link

^instructions: put a zipper on the back neck of the woman, and they will turn into a skinsuit, that can perfectly fit you, and when the zipper is fully up you will appear like the girl, with their memories! The girls can be turned to normal or on a semi shared space by leaving dna in their skinsuit, you return them to normal by removing the zip^ (biggest bullshit since all might said I couldn’t be a hero) but he put in his address and got some.

Two weeks later a parcel arrives, with his name, he brought it to his room and opened it, and inside, roughly 50-60 zips, it who will he test it on?