Whoa! Thank you for sharing your experience @DeniGu . Bunjee from hot air balloon sounds so fun 
Wow! You probably gave me one more to do thing Although I have done Bunjee at Rishikesh, India, I would love to try the hot air balloon jump 
Japan makes me nostalgic too! Your mention about bookshop and sushi made me remember how much I loved Umeshu
Hope you get to visit Saitama soon
Nihon ni Ikitai🥺