A Love Story on the Shore

A Love Story on the Shore (渚の愛のものがたり, Nagisa no ai no monogatari) is the seventeenth chapter of To Love-Ru.

Summary
Rito, Lala, and Haruna are at the seaside summer school. Rito is awestruck at how good Haruna's swimsuit looks, but his thoughts are interrupted when a speedy swimsuit thief goes on the loose. Nearly all of the girls' swimsuits get snatched, and all of the boys (excluding Rito) are jealous of the thief. Lala decides to go look for the thief, taking Rito with her. The swimsuit thief turns out to be a dolphin who was washed up on the beach and looking for help. Lala and Rito take the dolphin back to it's mother and they reunite. Meanwhile, the girls think that the perverted principal of the school was the culprit, after seeing him discover all of the stolen swimsuits.