Train travel app? 13 days Tokyo – Kanazawa – Osaka – Kyoto – Tokyo

Hi my broke college student kids and their friends are planning the above. They're looking at relevant train passes for budgeting purposes and getting a bit lost. Initially thought the JR 14day pass but super expensive. ChatGPT thinks cheaper to buy single passes but cant find an app that will let us book multi trips. I can work out each pass singularly but surely there is an app or website that can do this.

Ngā mihi!

by www_npc