Help me plan my April trip!

Hello everyone! I am trying to plan my trip to Japan in early April and would love to hear your thoughts on my itinerary. I'm worried I've either overpacked or underpacked some of my days, and would love any suggestions you might have to help optimize my itinerary. They are listed loosely in the order I'd like to do them. I also have a few days where I am not sure what else to do in the area, so if you have any suggestions I would love to hear them.

Also, I was wondering if with this itinerary, would it be better if I stayed in Kyoto instead of Osaka?

This is my first overseas trip with my significant other. Thank you!

Landing in HND at 4:15pm: plan to just explore the surrounding area

First full day: Harajuku, Shibuya 

Hamarikyu gardens (hotel close by)

Meji jingu shrine

Yoyogi park

Harajuku shopping

Shibuya: shopping + pokemon center

Shibuya sky – sunset time?

Day 2: Shinjuku, Ikebukuro

Tsukiji fish market in the morning

Shinjuku gyeon park

Shinjuku shopping 

Ikebukuro (sunshine city, exploring card stores near by)

Day 3: Asakusa, Ueno, Ginza

Asakusa: Sensoji temple, nakamise, appabashi

Ueno: ueno park, Ameyoko shopping

Tokyo sky tree + Pokemon center 

Ginza: flagship stores

Day 4: Fujikawaguchiko (Hotel near Ropeway)

Planning to take earliest bus or train out to arrive around 10am.

Chureito pagoda

Bike around Lake – oshii park would be the turn around point

Panoramic Ropeway

(I have to be back for kaiseki dinner at 6pm, is this doable?)

Day 5: Osaka (hotel hear Dotonburi)

Shopping: Ebisu bashi-suji, Shinsaibashi suji

End with Dotonbori and ebisu ferris wheel

Day 6: Osaka 

Osaka castle 

Kuromon market

Nipponbashi shopping street 

Namba parks

Sennichimae doguysuji shopping street 

Umeda shopping 

Umeda sky building 

Day 7: Kyoto – Uji 

Byodo-in temple + surrounding areas 

Nintendo museum – reservation at 3pm

Daikichiyama Observation Deck?

\***Suggestions?

Day 8: Kyoto – Higashiyama, Gion, downtown Kyoto

Fushimi inari + sennyu ji temple 

Higashiyama + gion area 

Nishiki market

Downtown Kyoto shopping + Glanta rings

End at night back at yasaka shrine + maruyama park

Day 9: Kyoto (Arashiyama) + Osaka day

Kyoto imperial palace + gardens 

Nijo castle 

Arashiyama explore

\***Suggestions: back to Osaka or stay in Kyoto?

Day 10: Tokyo – Odaiba, Akihabara (hotel near akasaka)

Divercity plaza + unicorn gundam

Tokyo station

Explore Akihabara

***Suggestions?

Day 11: Tokyo: Free day

Tokyo tower?

**Suggestions?

Day 12: final day, leaving from HND at 3:15pm

Chill and relax

by 97baobuns