My guess: Van will get there a week or two early. He will be equipped with 2 - 5 ballistas and 100 people at most... and will just eviscerate his opponents.
Theresa being his weakness is really nice. It also shows why witches are so strong even against stronger opponents. Their opponents has to be able to discard anyone and everyone to kill that ONE pesky witch
Her pointing towards his present being in her hair, while she is giving him "his present"... and hearing "in the future as well". Yup, MC might not realized it, but he just got married :A
Rereading this manga (for n-th time) I must say that Odette is wife material fo sure. And Yuki does recognize it as "her being a great woman/friend/noble".
Bro, if you want to lower her "affection"... well, just try to be me next time? orz
Also, did grill realize that he is her classmate at all, or she does not even know his name (or surname)?