'Ookami Nanka Kowaikunai!' ('Who's Afraid of Wolves?') by Ikeyamada Go 1 volume-complete
'Valentine Nanka Kowaikunai' - extra
Moe felt like she was thrown into a hungry pack of wolves as the first girl to enroll in the school. Its' the first series of 'Uwasa no Midori-Kun's mangaka. It's tamer than Uwasa but wilder than Dear School Gang Leader. There's only one main guy though. Also check out the Valentine extra.
Thanks to Lolly for the tip!