[Requests Accepted] [X-BANGBANG & けだものソフト] 妹らぶそでぃ [RJ134398]

New Genre "Coughing Blood Little Sister"!? An adventure spent alone with a super frail little sister during the New Year. The sister's condition changes based on how far you go, so the brother's responsibility is extremely serious! While skillfully controlling the sister's health, enjoy various lewd activities! The female character features uncensored full voice with no beeping! Sister: Koyuki The protagonist's little sister. She has been extremely frail since birth. When she gets excited, she exhausts her stamina and weakens. In severe cases, she may cough up blood or experience cyanosis, leading to life-threatening situations. Due to her circumstances, she is quiet and lonely. She is extremely shy and hardly opens up to anyone except her brother. She is a super brocon and excessively clingy. While I thought she would never grow up, in reality, it is completely the opposite...