I recommend spring or fall. In spring,you can see beautiful cherry blossoms. In fall, you can enjoy the colors of the autumn leaves. Also,These are comfortable seasons. Summer in Japanese is so humid, so it’s not good season to come to Japan I think.
that's a difficult question 🤔 You can see various scenery depending on the season. I think spring is the best season. The cherry blossoms in full bloom are very beautiful. And the temperature is also good. Depending on where you visit,the season you can see the best scenery is different.