Question: what are jiraiya books about?
Answer: Three Icha Icha novels. Icha Icha (イチャイチャ, English TV: Make Out) is a series of adult novels written by Jiraiya after the commercial failure of The Tale of the Utterly Gutsy Shinobi. The Icha Icha novels are based on Jiraiya's experiences in love, particularly his rejections by Tsunade.