TLDR; Rugby manga with Haikyu vibes
Disclaimer: I give 10's to bump up series that I believe deserve better scores. This series is not a 10.

What you should expect if you read Beast Children:
Oh look it's Hinata
Speedy boy gotta run fast
"I can't really relate to this level of energy, but I'm into it."
"I can't really relate to this level of closet boy love, but I'm into it."
Kinda off-putting art and character design, especially considering how new it is
"When and how did I start feeling things? Oh right it's sports manga"
I just started caring about and remembering the huge amount of characters you dumped on me and now you're dumping another dozen?
WHERE'S THE ENDING?!

'spretty gud tho.