ep 13 is an unaired episode? So is it similar to ep 13, 14, 15 of Bakemonogatari?

For some reason, their drawing out Volume 3, so are they planning to end at the Vlad arc correct? I find that they should at least stop at the Sherlock Holmes ending arc.

give seen anime (already on ep.10) & yet not read manga or novel here some idea to Speculation

1.in ep.10 that male teachers seem bit hmm give looking at him especially qiuck showing bit "hmm" i would not be stun he pull a heel turn.

2.give casting seiyu so far is possible in out of no where squeeze to put in mamiko noto last 2eps yea pull in Relationship Voice Actor theory give so far we got bunch in it & yet i would not be stun if they got mam in it.

really these 2 i came up with give more huh how the mom got jali over 600 to 800+ yrs still too muh uncalled for to do.

It's just 12 eps....

I think it's 13. At least according to th anime-watching wwebsites.

Ending at volume 3 is the best thing to do since it will give a cliffhanger to the series. After all, it is a series about a boy who wants to quit Butei because of his brother.

If they will provide a cliffhanger. That will make JC staff serious in making a second season. If not then that's it.