Reccomended reading
Personally, I enjoyed Child Of Mine by Ambrant Arrandel a lot more than Juugo, but less than Neo Negima. Almost certainly because I am biased again NegiAsuna or NegiNodoka.
NegiAsuna, simply because I have a nagging suspicion she is his big sister. I do not know why, but without regarding the anime she did spend time with the thousand master, right? And she does bear a striking resemblance to Negi's cousin (who he refers to as a sister). Probably unfounded.
NegiNodoka because I simply do not like how slow a non OOC story between these two would go. I am NegiEva, NegiAkira, and Negianyone other than those two all the way.
I have written a few stories myself, but for the love of all that is holy only read the parodies. My two ongoings were crappy even to me, even though the grammar and syntax were good, one was rushed and the other had an OC. Nuff said, I suck at writing OCs.