Boobie-Boobie Up-Kun

Boobie-Boobie Up-Kun is one of Lala's inventions.

Feautures
This is an incense burner which looks a pink breast with a face and Deviluke symbol capping yellow beak smouldering its agent for growing breasts.

It can grow female breasts, but thanks to incomplete prototype, it also has the opposite effect to ones whom have already big breasts. The effect only lasts a short while.

Appearance
This invention appears in the chapter 10 of To Love-Ru Darkness (adapted in the episode 7 of the anime).

In order to cease Nana and Momo from fight as Momo made ridicule of Nana's flat chest, Lala uses this invention to grow Nana's breasts. Meanwhile, Momo's breasts flattened due to its another effect. However, this invention is still incomplete so the effects for both sides of them wear off after a short while.

Trivia

 * Its use is similar to the Pai-Pai Rocket-Kun.