Regarding the dub vs. sub: The Japanese voice cast (Mahiro Takasugi and Lynn) is phenomenal. However, the English dub is considered an "S-Tier" localization. If you watch on Bilibili, watch the sub. If you want the dub, go to Crunchyroll.
If you are looking for high-quality, official sources or if Bilibili is restricted in your area: : Available in select international regions. i want to eat your pancreas english dub bilibili
Whether you watch it subbed or dubbed, this movie will emotionally destroy you in the best way possible. Regarding the dub vs