Hirobiro Bathroom-Kun

Hirobiro Bathroom-Kun is one of Lala's inventions.

Hirobiro means "vast or spacious" in Japanese.

This inventions looks spherical and have upper white portion with Deviluke's symbol and screen below the symbol, yellow ornament at the centre, black triangular part with three yellow dots between the yellow ornament, and black portion below the yellow ornament. The white oval portion between screen and the yellow ornament seems to be its switch for turning on and off. When the invention is turned on, this screen is green and when it is turning off, this screen is red with some letters of Deviluke during activation. It is used for increasing the space of bathroom. And when this invention is turned off, the bathroom becomes diminished and its original size. It seems to only function in bathrooms as its name means.

Appearance
In the chapter 76 of To LOVE-Ru, it is used by Lala in order to increase the space of the bathroom in Yuki family's house for bathing together with Haruna, Yami and Mikan. But Lala didn't know that Rito is already bathing in the bathroom, and she puts this invention on the door of bathroom and turns it on when she enters. But later on, Peke accidentarily turns it off and the girls discover Rito in the bathroom. And it is the first and last appearance in the manga.

This invention also appears in the episode 2 of Motto To LOVE-Ru.