Who is the man in this photo? From which anime?

The cheese on a moonlit night is a cartoon/view/1793552.htm? fr=ala0_ 1_ 1

Moonlit Cheese is a cartoon by a famous Japanese illustrator. Hiragi, the hero, is free with his favorite galgame heroine in his dream, when a girl who is not in this game appears and kisses freely. The girl's name is Mary. As she said, freedom comes from her dream world to her room. Mary wants the freedom to live with herself because they are all girls. At this time, she said freely and angrily that she was not a girl, so Mary took him (her? ) I was shocked when I pulled myself in front of the mirror and saw my face freely. My face is obviously the girl in galgame. This girl named Mary doesn't even know what a pyramid is. After several negotiations, I realized that this is not Japan or the earth.