Bijo, Tokidoki Yajuu
Finished美女、ときどき野獣
Yukijo is a high school student with a severe allergy to women—literally breaking out in hives whenever he gets near one. During his school's festival, he unexpectedly bumps into a stunning long-haired beauty dressed as a maid and feels no reaction at all, falling in love at first sight.
To his shock, the beautiful maid turns out to be Haruki, his male classmate who enjoys cross-dressing. Every time Yukijo is around Haruki, he experiences an uncontrollable urge he can't explain. As Yukijo grapples with his confusing feelings, he must navigate a romance that defies his usual allergic response.