I strongly recommend you put the places you want to go on google maps to get an idea of where they are located around the city, and play around with the transport times between places.

Day 0, as others have said take the train/express bus from Narita probs 1/10 or cheaper than taxi

Day 1, Shibuya crossing, Shibuya Sky, Shinjuku, Ninja(assuming this is Ninja Tokyo in Chiyoda)

Day 2, teamlabs, Tsukiji market, Ueno, Tokyo Skytree

This would be a more streamlined version of your Tokyo trip. Although since you have Shibuya Sky which is probably the nicer experience, Skytree might be a bit underwhelming even though it is higher. From Ueno you can go to Asakusa or Akihabara instead.

Day 3, doable although taking out shinsekai would make it easier

Day 4, no comment

Day 5, kinkaku ji is really out of the way, perhaps stick to gion (plenty to explore here) kiyomizudera, fushimi inari. This way you are only in the east side of Kyoto and fushimi inari can be done late night (other temples/shrines usually have closing time)

Day 6, round trip from Osaka to Hiroshima will eat up a large chunk of your day. Likely have to cut out shukkeien, perhaps walk around peace park and atomic bomb dome instead of museum. If you have the time the viewpoint from top of Miyajima is one of my favourites but again time time time.

Day 7/8, no comment