Looking for lesser-known shounen manga to read?

Well shounen is my favorite type of manga but I've been running out of stuff to read lately. If you know any, please answer ^__^

- Please try to list long running ones. If they're finished that's fine. If you absolutely must recommend a short one, go ahead.

- I'm not in the mood for ecchi or harem right now. I'm looking for action, adventure, tournaments, stuff like that.

- Should have A LOT of characters.

- It would be nice if you gave a qucik description, but just a MAL link or something will be fine too.

When I say lesser known I assume you all know what you mean but I know some people aren't going to bother unless I have a list.

Here's the ones that I don't want you to mention. There are probably more, but I don't want to waste time listing everything.

So please, DON'T LIST THESE POPULAR ONES: :)

Katekyo Hitman Reborn, Gintama, Beelzebub, The World God Only Knows,

Ichigo 100%, Naruto, Blue Exoricst, D.Gray-man,

SKET Dance, Prince of Tennis, Bakuman, Beelzebub,

Black Cat, Bleach, Death Note, Eyeshield 21,

Kuroko no Basket, One Piece, Fairy Tail, Soul Eater

Fullmetal Alchemist, Mirai Nikki, Air Gear, Mahou Sensei Negima

etc

A few lesser known ones that I'm going to start are Kurogane, Sensei no Bulge, and Nisekoi. If you've read any of these, please tell me about them x)

Thanks!