Love Lab?.The Student Council decides to have Riko survey guys at the Irikimi Cram School to accumulate responses for a love question regarding which hairstyles are most popular to guys attending the nearby South Middle School. Riko learns from Satoshi that guys at South Middle favor girls with silky, black hair in addition to idolizing Natsuo. Realizing that she is best able to answer the question, Natsuo comes up with various ridiculous situations to help showcase her hair to guys, all of which are rejected by Riko...