Saikin, Imouto no Yousu ga Chotto Okashiinda ga.  

Recently, My Sister Is Unusual., Lately, My Little Sister Has Been a Bit Strange, ImoCho., 最近、妹のようすがちょっとおかしいんだが。, Recently, My Sister is Unusual.

A high school girl named Kanzaki Mitsuki recently gained a new older brother when her mother remarried. However, after their father was transferred overseas, Mitsuki's mother followed him there, leaving her alone with Yuuya, her step-brother. Feeling abandoned by her mother, Mitsuki kept a distance from Yuuya and struggled to get along with him. One day, an angel/ghost named Hiyori visited Mitsuki and took over her body in order to make sexual advances towards Yuuya. As the lost spirit of a girl who died but couldn't reach eternal peace, Hiyori put a belt on Mitsuki called the TST that filled up every time she felt sexual feelings from Yuuya. For each fill-up, Hiyori gained a step closer to the gates of heaven and eternal peace. In order for Mitsuki to get rid of Hiyori, she had to make bold and sexy moves against her own brother, even though he was just a step-brother.

Saikin, Imouto no Yousu ga Chotto Okashiinda ga. will be published in Spanish by Editorial Kamite in Mexico in the second semester of 2016.