Rail Pass for 14-Day Itinerary

Hello! Good morning! May I ask what type of rail pass is appropriate for our stay in Japan from Jun 7th - 21st. Our itinerary is as follows:

Jun 7th: Arrival Narita Airport
Jun 7th: Head to Osaka in afternoon
Jun 8th: Explore Osaka
Jun 9th: Day trip to Osaka neighboring areas
Jun 10th: Day trip to Osaka neighboring areas
Jun 12th: Day trip to Kyoto
Jun 13th: Day trip to surrounding areas of Kyoto
Jun 14th: Day trip to surrounding areas of Kyoto
Jun 15th: Osaka to Tokyo
Jun 16th: Explore Tokyo
Jun 17th: Explore Tokyo
Jun 18th: Day Trip to Mount Fuji
Jun 19th -20th: Day Trip to Tokyo neighboring areas
Jun 21st: departure from Narita

I would be grateful for your guidance on what pass is most appropriate to travel via rail based on above itinerary.

Best regards,
Dina Quesada