JR Pass

Can I buy a JR Sanyo Shikoku Northern Kyushu Ver.Pass at Fukuoka Airport (on Arrival Floor at TIC counter) ?

No, but you can buy one at Hakata Stn at the JR office, or you can get an exchange order for it before arriving in Japan - but you still need to go to the JR office. Complete info is here:
https://www.westjr.co.jp/global/en/travel-information/pass/northern_ky...

Thank you so much.

I plan to use JR Sanyo Shikoku Northern Kyushu on my trips by following trains

(Refer to Hyperdia)
1.Hakata-Hiroshima by JR Shinkansen mizuho602
2.Miyajimaguchi-Hiroshima by JR Sanyo Line
3.Hiroshima-Hakata by Shinkansen Kodama745
4.Hiroshima-Okayama by JR Sanyo Shinkansen Nozomi38
5.Hakata-Tosu by LTD.EXP Kamome9
6.Tosu-Shin-Tosu by JR Nagasaki Line
7.Shin-Tosu-Hakata by JR Shinkansen Tsubame328
8.Hakata-Humamoto by JR Shinkansen Tsubame311
9.Kumamoto-Aso by .LTD.EXP Kyushu Odan Tokkyu2
10.Hakata-Nagasaki by LTD.EXP Kamome9
11.Hakata-Shin Shimonoseki by JR Shikansen Kodama856
12.Kokura-Hakata by JR Shinkansen Kodama749

I would like to know that 1-12 are covered by JR Sanyo Shikoku Northern Kyushu or not ?

Thank you.