As a student who failed the entrance exam three times, I was privately tutored by Mio, my older brother's wife who graduated from a top university, in addition to attending a cram school. I secretly admired Mio, who is kind, intelligent and glamorous. On the day when the typhoon hit directly, Mio came to tutor me, soaking wet from the storm. I was captivated by her shiny wet hair, her body line where her clothes were clinging to her body, and her transparent bra, and I was unable to suppress my desire that was raging like a storm...