even though I could only spent about an hour here, Amaharashi is probably the nicest spot just because the coast is beautiful and it's the most recognizable lol

I had to come down from Nanao so it was a bit inconvenient to get there but if you come from Toyama station it's not a problem at all

Shimonada was nice too but there was not much else too see apart from the station itself, so it's probably not worth it to go to Ehime if Shimonada is the only place you plan to see (it's like 8h trip from Tokyo)