Cycling Japan 2017, Shimonoseki to Tokushima with my friend Sho made it easy and comfortable, expensive accommodation, unless you stay shared rooms in guesthouses or hostel. Look here the photos.
Ride 1 Shimonoseki - Kitakyushi
Ride 2 Kitakyushi - Ajimimachi
Ride 3 Ajimimachi tour
Ride 4 Ajimimachi - Beppu
Ride 5 Beppu - Ozu
Ride 6 Ozu - Matsuyama
Ride 7 Matsuyama - Imabari
Ride 8 Imabari -Onomichi
Ride 9 Onomichi - Imabari
Ride 10 Imabari Saijo
Ride 11 Saijo - Kanonji
Ride 12 Kanonji - Marugame
Ride13 Marugame - Takamatsu
Ride 14 Takamatsu - Tokoshima
Ride 15 Ferry - Tokyo
Ride 16 Tokyo - Fujimichō
Info
http://www.japancycling.org/v2/fstep/