Another interesting event happening during the festival is the special collaboration between Nagoya city and the manga Ikusa no Ko by Tetsuo Hara-sama, "Nagoya ni Okehazama ari." (literally, "Okehazama is in Nagoya"), that will feature special merchandising for sale and a lottery. Fun fact, a similar pre-event was held in Tokyo, by the Yurachuko Station, and you can read the report about it on the official website of the mangaka.
Speaking of which, today the new chapter of the manga is up for online reading :D
The events are free, and they'll be set in the Ninomaru park of Nagoya Castle. Here you can find the websites for both events!