Sono Bijin (Otoko) Fushidara ni Tsuki

Cool and tomboyish Nagi wants a boyfriend, but has one big problem—ever since an incident in college, her body reflexively rejects the touch of any man. That is, until she encounters the beautiful male model Aran, who uses his androgynous look to effortlessly model both masculine and feminine styles. She’s shocked to discover that she can touch him without having a reaction, and when he asks her to join him in an upcoming photo shoot with a famous photographer, she agrees, on one condition—be her practice boyfriend for one month, and help her conquer her aversion once and for all. By the author of Such a Treacherous Piano Sonata!
(Source: Kodansha USA)