Be Careful, Onee-San. Manga [update: Aug 07, 12:23] 4.1 Alternative 気をつけなよ、お姉さん。 ; Kiwotsuke na yo, Onee-san. Author(s) Sasuke Status Ongoing Genre(s) Comedy - Shoujo ai View 452.100 Chapter First Chapter last Be Careful, Onee-San. Content Serialization of Big Girl and Little Girl.After being saved from drowning while swimming, Honda Tae falls in love with the handsome Igarashi Mai, who she then discovers is ten years old... Be Careful, Onee-San. List Chapter Read more Maybe coming in the next issue: Be Careful, Onee-San. Chapter 32 Be Careful, Onee-San. Chapter 33