Itinerary for 5 Days Tokyo-Kyoto-Osaka

Hello there..

I'm trying to make Itinerary for 5 days trip to Japan (Tokyo-Kyoto-Osaka) with the date below:

21 Apr - 23 Apr 2018 : Tokyo
23 Apr - 24 Apr 2018 : Kyoto
24 Apr - 25 Apr 2018 : Osaka

Would you Help me to give recommendation about the Places that we should go within that day?

I'm traveling with My Wife. We Will arrive at Haneda (HND) and Will depart from Kansai (KIX). Should we buy JR Pass?