Fight Ippatsu! Juuden-chan!!

Synopsis

Sento, his boss, Hakone and Iono go to the beach, while Plug and Arresta, also on their day off, decide to go too. While enjoying the sun, Plug notices a writer on a slump behaving strangely, despite being ranked E. Despite Arresta's suggestion not to bother during break time, Plug investigates, and when the writer passes by a strange girl in a hat, she gets angry at her parents and her warning rank rises to a C. She soon ends up on a raft out at sea, increasing in rank, but Plug isn't able to find any power sources out at sea. She calls Arresta for help, and when Sento hears about it, he takes his boss's car and drives it off the edge, so that the power can reach the writer, who becomes energetic and starts writing again. Arresta notices that despite the number of people charged Plug has is low, there are no repeaters among her.

(Source: Wikipedia)