So instead, I've decided to take the local train all the way from Kyoto to Tokyo, which takes around 9 hours, giving me plenty of time to enjoy the train and the sceneries. As an addition, when you buy a JR ticket of distance over 100 km long, you're allowed to make as many stop overs (including going outside the gates) as you want, so I could visit some of the towns along the ways too! The stop over rule doesn't apply to express tickets, so I couldn't make a stop over using the Shinkansen without buying new express tickets for each segment.
Unfortunately, Google Maps does not allow me to find a route without using the Shinkansen, so I had to use a different site — Hyperdia. The one way ticket from Kyoto to Tokyo, which I've used, costs ¥8,210. Alternatively, one can use the Seishun 18 ticket which allows 5 days of unlimited rides on JR local rides for ¥11,850 (only available in some seasons).
I'll most a series of photo after this, but let's get to the summary first. The ride was very interesting and I've stopped at Maibara, Gifu, Nagoya, Shizuoka, Yui, Nebugawa and Odawara. It didn't feel boring at all. However, I probably wouldn't do it again (at least not on the same route ;)).
