Wishing Happiness unto an Idiot Sister, originally titled 俺の妹はとても残念なおバカだが、良い子なので幸せになって欲しい, is a delightful Japanese web novel that falls under the genres of comedy and romance. The story revolves around a caring protagonist who wishes the best for his endearing yet foolish younger sister. Filled with heartwarming moments and light-hearted humor, this oneshot novel portrays the bond between doting older siblings and explores themes of family love and happiness.