Doutei Otouto to Bitch Ane - The cherry boy with Bitch sister.
[Akaneko (Sakura Siro)] Maji de Uchi no Otouto Nanka Zenzen Kawaikune-shi [English] [mysterymeat3] [Digital]
Otouto ga Aka-chan ni Nacchatta | My Little Brother Has Turned into a Baby
[88scones (Sakaki Tsui)] Otouto Spy to Himitsu no Shachoushitsu [Digital]
[Jyun] NEET Ane wa Otouto o Dokusen Shitai Youdesu. | NEET Older Sister Wants to Monopolize Her Younger Brother! (COMIC Shingeki 2015-07) [English] [N04h]