Suki Sugiru Kara Kanojo Ijou no, Imouto Toshite Aishite Kudasai

Suki Sugiru Kara Kanojo Ijou no, Imouto Toshite Aishite Kudasai is a Manga/Manhwa/Manhua in (English/Raw) language, ROMANCE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.com fastest updating comic site. The Summary is

I was accepted to work at the game company that I admire SGO (Sister with Great Onii-chan)! The job given to myself, Keita Majima, a high school student who got such a miracle is "Rental Onii-chan" to make the best sister character! It's a sister-sister contract romantic comedy story full of affection between myself who loves younger sisters and the girls who want to be my younger sisters!