Maigo ni Natteita Youjo wo Tasuketara, Otonari ni Sumu Bishoujo Ryuugakusei ga Ie ni Asobi ni Kuru you ni Natta Ken ni Tsuite

Also known as 迷子になっていた幼女を助けたら、お隣に住む美少女留学生が家に遊びに来るようになった件について / The Story of How a Beautiful Foreign Student Who Lives Next Door Started to Visit My House After I Helped a Lost Little Girl / After Coincidentally Saving the New Transfer Student's Little Sister, We Gradually Grew Closer