"You're so cute when you take off your glasses!" In the empty library after school, quietly turning pages in my usual seat... My daily life as a plain existence in class was spent immersed in my favorite reading... until the day he came to this library. Triggered by meeting Umeno-kun, who transferred here six months ago... I stopped wearing glasses and switched to contacts, started wearing lip gloss, and changed my hairstyle... all of it was out of a desperate desire to change myself, and a desperate desire to be liked by him... And then, I started doing whatever he told me to do... "I want to see your panties..." "I want to see your tits..." "I want you to suck my cock..." His erotic requests escalated more and more, hidden in the blind spots of the library... It was embarrassing, but I didn't want him to hate me... I wanted to accept everything about him... Just like everyone else does... I did lots of erotic things with him... Innocent yet lewd, and devoted to the point of being too serious, that's Sumire. Like turning the pages of a novel one by one, this bookish girl gradually transforms. Her desire to change and her rich imagination steadily accelerate her erotic heart. A devoted and somewhat precarious, supreme "transformation" youth love story.