nope.
i estimate the fisrt playthrough between 16-42 hours depending how capable you are, the hero build you are playing and if you skip certain content.
To unlock every cutscene you need at least two playthroughs (Bull Route + Perfect Good Ending). If you wanna learn more about the perfect good ending, use the search funtion and look for a thread with the name "good ending". Once inside look for "best good ending". And don't ask further question about the war ending, because the thread + official guide already anwsered basicly every question.