Maya thinks that the sponsor is someone who is very important to the Yotsuba Clan, and doesn't want any discord with the sponsor.
Hayama shows much caution with creating trouble or discord with the sponsor. Hayama also thinks that the sponsors are possibly dangerous as well, when he called them those "creatures".
Shiba Tatsuya saw Toudou Aoba first at Yakumo's temple, where he had a long private meeting with him. He asked Yakumo to prevent Tatsuya from revealing his abilities in front of others, especially the USNA soldiers.