After introducing herself as Keima's sister,
Elsea follows Keima home, moves in and tries to act like a real little sister would. Keima on the other hand refuses to accept her. Ultimately he gives in after Elsea completes the requirements that he believes a little sister must have.
After the sister issue is settled, the second target appears: Mio Aoyama, the daughter of Aoyama Central Industries' president. To Elsea this seems like a hard capture, but Keima begs to differ. He knows that behind the tough exterior there's a soft and innocent side. So now it's off to plan the best route for capture.

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Keima Katsuragi ( x ) ( x ) ( x ) |
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Chihiro Kosaka ( x ) ( x ) ( x ) |
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Elsea de Lute Irma ( x ) ( x ) ( x ) |
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Mari Katsuragi ( x ) ( x ) ( x ) |
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Mio Aoyama ( x ) ( x ) ( x ) |
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| Yoshikazu Iwanami | Audio Director | Long time sound director for numerous anime series. | ||
| Tamiki Wakaki | Original Concept | creator of The World God Only Knows and Seikesshou Albatross. He started as an assistant to Yūji Takemura | ||
| Akio Watanabe | Character Artist/Designer | A Japanese animator, character designer and animation director who often goes by the name Poyoyon Rock. | ||
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Hideyuki Kurata | Writer | ||
| Hayato Matsuo | Music | |||
| Kazuhiro Yamada | Animation Director |