The surreal gag manga follows a quiet, timid girl named Misuzu whose older sister Naoko is returning from studying aboard. However, when she hurries home to meet her sister, Misuzu instead encounters Naoko-san, the strange alien from Yuri-sei (Yuri Planet) who loves eroticism, yuri, and girls.

A series of "bishōjo"-centered manga booklets that were released weekly for a short time in Japan.
The manga would come packaged with a limited edition plastic-figure assembly kit, designed by Ohshima Yuki, of the featured character of the week:
Volume 1 - New! - Figure for volume 1 - Mion
Volume 2 - Two! - Figure for volume 2 - Ashita
Volume 3 - Hot! - Figure for volume 3 - Harusame
Volume 4 - Why!? - Figure for volume 4 - Sonome
Volume 5 - Bye! - Figure for volume 5 - Eruron
Bonus volume - eXtra! - Figure for bonus volume - Tetora
There is a conspicuous absence of the brothers (oniichan) of the title, as only the little girls are 'portrayed.
(Source: MU)

This is the story of a catgirl and her excursions along the railways of Japan.

Comedy about a high school manga club. A frog god who can turn into a good looking guy lives in the club meeting room, but that has very little to do with the plot. He's there to just read manga.
Source: Mangafox