Hi, Raja. I couldn't help to comment here since Haikyuu is one of my favorite anime too!
For me, I loved Haikyuu because of its great story and character development. Just like every good anime out there, Haikyuu gave me a lot of strong messages about teamwork and self-development, like how to be best at something we’re passionate about, aim for bigger goals so that we can thrive to be better and move forward.
Thanks for writing and sharing your review here :)