Safe
Yes. Nothing to sign up for, nothing to install, nothing to pay: no account, no email, no card, no file to run. The browser keeps three small things, your list, your country and your episode marks, and none of them leaves it. Posters come from the film database that supplies them; the only links that leave the site are the Watch now buttons, each naming the service it opens. Nothing here can install itself on a device.
The question comes from copies that carried the name and paid for themselves with pop-ups, fake download buttons and players demanding a plug-in. This site never asks you to install or pay for anything between a search and a title; the address page shows how to tell it from a copy.
Legal
Reading about a film, following a season and keeping a list is ordinary browsing, in every country the site covers. Viewing happens on the service you pick from the Watch now list, and that list is made of licensed services operating in the country you chose: subscriptions, free ad-supported tiers, rental stores. Change the country, the list changes, because licences are sold country by country. That is what keeps viewing legal wherever you are.
How the site pays its way
Some services pay a small referral fee when Watch now sends a visitor who then subscribes or rents, at the service's ordinary price. No premium tier, no membership, no locked pages.
Family viewing
The genre chips and the synopsis are on every title page before anything plays, and the animation and family shelf gathers the titles made for younger viewers. Age ratings and parental controls are enforced by the service you open.