Would anyone happen to know if this is a manga or just an illustration?

Sorry forgot to add the Iink.
http://www.mangago.zone/read-manga/ijiwaru_na_kiss/mf/c000/34/

http://www.mangago.zone/read-manga/sensei_no_kokuhaku/


I think thats it, but im not sure >.<

Its an illustration from one of the illustration books of yamane ayano. Its in mangago. Although I heard that some of the illustrations come from her novels but the problem is no one is translating any of them :(