I think I understand how manga plus operates. The first 3 chapters are always free to read and so are the last three. the rest are deleted because you are encouraged to buy them off of viz.com, thus why you can see their adverts on mangaplus's site. This sucks for me though, sure it only costs $8 for 1 volume, was going to buy it online but the shipping price was $30, fucking *$30*. I'm not an adult yet, my parents wouldn't approve spending $40 on a manga. it's disappointing honestly....