JR Pass or JR East should be more cost effective for my itinerary below:
Day1: Narita Airport to Ueno station 上野駅
Day2: Ueno Station to Aomori 青森, Leave luggage at Aomori then take train to 弦前. Stay 1 night at aomori
Day3: Aomori Station to Oriase 奧入瀬溪 and get off at 雲井の滝 then walk to 石ヶ戶 then take bus to 谷地温泉Yachi Onsen. After Onsen, at Yachi Onsen take bus to Aomori then take train to Hachinohe 八戶. Stay 1 night at Hachinohe 八戶
Day 4: Hachinohe 八戶 to Kuji久慈, then take train 三陸鐵道 and return to Kuji久慈 and back to Hachinohe 八戶. Stay 1 night at Hachinohe 八戶
Day 5: From Hachinohe 八戶 to 北上展勝地 to leave luggage. From 北上展勝地 to Kakunodate 角館 and Morioka Station and back to 北上展勝地. Stay 1 night at 北上展勝地.
Day 6: From 北上展勝地 to 米沢 and go to 乳頭onsen again. Stay 1 night at 北上展勝地
Day 7: From 北上展勝地 to 茨城懸勝田駅 to 國營常陸海演公園 then retrun to Tokyo Asakusa.
Day 8: From Asakusa to 輕井澤 and back to Asakusa
Day 9-10: Walk around at tokyo
Day 11: From Asakusa to Narita.