Would love to support official releases. But unfortunately, in India almost all animes - you have to go for *ahem* versions. I doubt you will find even Blu-Rays here. Even amazon does not keep it. You might find books of Kimi No Na Wa and Weathering with You, but no movies. And even importing is a gamble, since Blu-Rays are region locked. I tried searching for it legally, but could not find it anywhere. That's the sad part of being an anime fan in India. At least now they are releasing in theaters and we saw it there legally to support it. Best bet is for you to wait for a Netflix or Amazon Prime release.
On another note, I saw this anime recently. And I would recommend it to everyone here. Especially if you are a fan of slice-of-life, comedy, heartwarming stories and innocent childish romance, it's highly recommended
*ahem* version unfortunately
Also, this one is a bit old and more well known, but if you are looking for an action, comedy and heartwarming story, this is also a must
It's Assassination Classroom and the entire series is available on Netflix.