If you look up, your sister is always. (Volume 1 latest issue)

Publisher: Yoshibunsha
Author: Kazuma Ichikawa
Size: 148mm x 210mm
Number of books: 1
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2018-05-07

Synopsis:
Freshly made height difference brothers and sisters pounding two people!?
Tsubute (29) and Haruka (17), who became brothers and sisters due to their parents 'remarriage, decided to live alone in their parents' assignments!?
The petite small -face Tsubute wants to watch a high school student's sister as an older brother, but the atmosphere is large and calm.
Pay attention to the fresh and irritating living together !!