yes 10 days in japan. land in KIX return also KIX
6th - Osaka - づぼらや 道頓堀店(Fugu), Osaka Castle (〒540-0002 大阪府大阪市中央区大阪城1−1), Kema Sakuranomiya Park for Sakura view (1 Chome-8-75 Tenmabashi, 34.702126, 135.519042), 万博公園太陽の塔, Minami (Namba)
7th - Kyoto - Nijō Castle, Nishiki Market, Kiyomizudera, Higashiyama Ward, (dinner at Sobanomi Yoshimura)
8th - Kyoto - Arashiyama, Kinkakuji, Ninnaji Temple (dinner at 10F Kyoto Station Building, Sakauchishokudou Kyoto ten or Tokushima Ramen Toudai):
http://www.picrumb.com/best-restaurants/ky...tion/tokushima/http://www.picrumb.com/best-restaurants/ky...kauchishokudou/9th - arrive at Tokyo, check in. Ikebukuro, Taito, Ueno Park, Asakusa (Sensoji Temple, Asakusa Shrine), Akihabara
10th - Disneysea
11th - The Tsukiji Market (つきぢ神楽寿司 / kagura sushi tsukiji), Tokyo Metropolitan Government Building, Shinjuku, Shinjuku Gyoen (dinner at Omoide Yokocho - Golden Gai - Kabukicho)
12th - Yoyogi Park, Shinjuku Gyoen National Garden, Meiji Jingu, Shimokitazawa, Takeshita-dori, Shibuya
13th - Depart to Osaka
13th - Tempozan Marketplace shopping mall (lunch in Naniwa Food Theme Park), Osaka Aquarium, Shinsekai
14th - Nara, Todaiji Temple, Isuien Garden, Kofukuji Temple, Kasuga-taisha, Shin-Yakushiji Temple, lunch / dinner (〒630-8215 奈良県奈良市東向中町6 / Higashimuki Nakamachi Shopping Arcade) near Kintetsunara Station, Kita (Umeda), Umeda Sky Building (after dinner)
I dont see you need Kansai Thru Pass..
you have 7 day JR Pass, which will be start from 7th until 13th.
from your iti 6th and 13th at osaka, you just need to take subway few times only. on 14th Nara day, if you're not rushing, just take kintetsu line express from kintetsu nippombashi to kintetsu nara only 540yen each way. Those ltd exp just 10mins faster. IMO, just get ICOCA and haruka will do bro, so that you can take Haruka train to and fro aiport. Haruka round trip tix valid for 2 weeks.
The ICOCA and Haruka price will b slightly increase effective 1 Apr, to 4060 yen.