SE-X File: Youkoso, Saijou Higashi Koukou "Choujou Genshou☆Tankyuu-bu" e!

is a Japanese light novel series written by Yusaku Igarashi, with illustrations by Shaa. The series began publication on December 10, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
"... Mo, Mulder !? What is Mulder ...?"

My goal at high school, Eiichiro Gouda, is to fill up the still white youth album with a youth event that shines in seven colors. Because of my constitution, I had nothing to do with youth when I was in junior high school.

"Sometimes Moulder-kun .── wonder if me and not willing to try a fourth kind close encounter?"

Invites But, however, was the head of the aliens come in contact with "Paranormal ☆ quest part" With my classmate Suzuo Shirahane ... What's going on with my youth !? When the girl's curiosity calls for naughty, the boy releases his nosebleed! Forbidden love-duction comedy is here!

"Mr. Morda ... Are you tired?