Well, there`s your house, in the local park, in a restaurant, while you wait for the food to be served. There are many legal places to read it. About the OP: If you want to discuss things in the manga, please call the article a “manga spoiler”. The only legal way to read the manga for free is to use Viz`s free trial to catch up (unless you`re regionally blocked or using a VPN) and cancel your subscription before you`re asked to pay. Then you can read the last three chapters for free on MangaPlus.