I want because You will see all the new heroes coming

As a long standing 7ds fan since the first initial chapters of Elizabeth fainting in the boarhat, and we're not approaching spoiler territory for the knight's of the apocalypse sequel, I can only say this: Do NOT play if you intend to play for the story if you have not finished watching the Anime first! Asides from that, the initial trailer is definitely developed to be pretty, but given my constant hope that this series becomes a monolith in the future, I can only say that 7ds is getting bigger and bigger!