Breakfast in Osaka, Kyoto & Tokyo?

Me and my family are going to Japan for 14 days. 7 in days for Osaka and Kyoto then 7 days in Tokyo. We are gonna do a lot of things early in the morning and we don't want to eat convenient store breakfast all the time. Are there any early morning breakfast chains that open early, like 7am – 8am?

by CoolAd5509