24 day Japan itinerary with panic disorder (march/april 25)

Hi friends, I (27m), first timer, am planning my 24-day solo trip to Japan in march/April 25. I'd love to hear your opinion and advice on my itinerary. Is it way too overpacked? I'm really into ancient Japanese architecture, anime and tech.

I am visibly tattooed but would like to plan a Ryokan stay (preferably with onsen) along my route. Are these worth the higher prices in regions like Fuji/Kamakura/Nara?

In addition, I have been suffering from panic attacks for several years, which manifest themselves in situations when I am alone. I was and will go to therapy again soon to work on myself. I want to fulfill a lifelong dream with this trip and free myself from the chains of myself. My question is, how is the topic of mental illness in Japan, are they a taboo? And how would the locals react if help was needed in a panic situation, even though the language barrier?

Day 1: 

• Arrival in Akihabara, Tokyo

Activities:

• Hozomon Gate, Asakusa Shrine, Senso-ji Temple, Tokyo Skytree 
• Discover Akihabara electric town (evening)

Day 2:

• Akihabara, Tokyo

Activities:

• Kanda Myojin Shrine, Ueno Park, Ueno Zoo
• Discover Akihabara, Asakusa

Day 3:

• Akihabara, Tokyo

Activities: 

• Nihombashi, Imperial Palace, Tokyo Tower, Tsukiji Fishmarket
• attend Kabuki performances at the Kabukiza Theater (evening)

Day 4:

• Arrival in Shibuya, Tokyo

Activities:

• Shinjuku Gyoen Park, Tokyo Metropolitan Building, Donki, 
• Discover Shinjuku – Golden Gai, Omoide Yokocho, Kabukicho

Day 5:

• Shibuya, Tokyo

 Activities: 

• Shibuya Scramble Square, Shibuya crossing, Hachiko Memorial,
• Discover Shibuya – Center Gai and Dogenzaka (evening) 

Day 6:

• Shibuya, Tokyo

 Activities:

• Meiji shrine, Takeshita Street, 
• Explore Roppongi

Day 7: 

• Shibuya, Tokyo

 Activities: 

• Daytrip to Nikko, Nikko Toshu-Gu, Nikko National Park
• Explore what ever I want

Day 8:  

• Shibuya, Tokyo

Activities: 

• TeamLab Borderless (in the morning) 
• last night in Tokyo

Day 9:

• Yokohama/Kamakura

 Activities:

• Yokohama Cup Noodle Museum (morning), China Town, then heading to Kamakura
• Explore Kamakura, Kotoku-in, Hase-dera etc., sleep there

Day 10:

• Kamakura/Fuji Five Lake Region

Activities:

• Chureito Pagoda, Kawaguchi Lake,  Arakurayama Sengen Park

Day 11:  

• Fuji Five Lakes

Activities:

•  Aokigahara (Morning), Saiko Iyashi-no-sato Nenba (traditionell japanese handcraft village)

Day 12:

• Kyoto

 Activities:

• Arrive in Kyoto
• Kiyomizu-dera, Sanjusangen-do, Nishiki Market
• Gion evening walk

Day 13:

• Kyoto

 Activities: 

• Nijo castle, Heian-jingu, Philosopher's path, Kyoto University

Day 14:

• Kyoto

 Activities:,

• Arashiyama Bamboo Forest (early), Kinkaku Ji, Botanic Garden, Eenryaku-ji

 Day 15: 

• Kyoto

 Activities: 

• Fushimi Inari Taisha, Imperial Palace

 Day 16:

• Daytrip to Nara

 Activities:

• Horyu-ji, Todai-ji, Kasuga-Taisha, Heijo Palace Site
• Sleep in Nara or Osaka??

Day 17:

• Osaka

Avtivities:

• Osaka Castle, Umeda Sky, Kuromon Ichiba Market
• Explore Dotonbori (evening)

Day 18:

• Osaka

Activities:

• Shitenno-ji (morning)
• Shinsekai (evening)

Day 19: 

• Osaka

 Activities 

• Namba Yasaka Shrine

Day 20: 

• Daytrip to Himeji

Activities:

• Himejijo castle, Engyo-ji
• Travel to Hiroshima

Day 21:

• Hiroshima 

Activities:

• Peace museum, Peace Park, Atomic Bomb Dome

Day 22:

• Miyajima

Activities:

• Itsukushima Shrine, what other things are possible due to the fact that its only 1 day?

Day 22:  

• Return to Hiroshima

Activities: 

• Shukkei-en
• Just enjoy myself and do what I want to

Day 23:

• Travel back to Tokyo (morning)
• Take flight back home in the evening