
I looked and couldn't find it online

" http://www.aacomic.com/comics/20958viewpage210109/" prequel and sequel are together. 91 pages....

Um........I think I found it..........Im a good researcher...
Link:
http://www.mangago.zone/read-manga/kimi_no_kao_ni_sasu_kage/
Its the English version, and just the title is different.
(๑•ㅂ•)و✧ Here u go!

I decide to look for the raws and take a look.... but the true is that the main history is Kimi no Kao ni Sasu Kage and Nagai Aida Kimi o Mite Ita was the sequel (for the first history)...
I looks like Kokui no Mure is the 2 first ch of the Nagai Aida Kimi o Mite Ita....
Ps. Maybe I am wrong.... but i think not... ٩(๑❛ᴗ❛๑)۶
Serie raw:
1. Kokui no Mure (is the 2 first ch of the manga Nagai Aida Kimi o Mite Ita ¬¬ )
2. Kimi no Kao ni Sasu Kage - Raw - http://www.77mh.com/colist_228068.html
3. Nagai Aida Kimi o Mite Ita - Raw: http://www.77mh.com/colist_226944.html
"Nagai Aida Kimi o Mite Ita" is the sequel.