"It turns out that Liliya still hasn't done it !" Geeky four-eyed Ai's "good luck charm condom" is picked up by the wild girl, Liliya Tanaka. Expecting to be teased, Ai is surprised to be asked, "You've got experience, right?" What's the startling request that comes from this...!? Is this the blessed, debauched school life of Ai, the lecherous, somewhat experienced girl!?