Meet Sumire Ishikawa, a softmore in high school. She has a secret: She's actually a mermaid. With the help of the legendary medicine, the Aqua Drop, she's able to live a normal life in human form. However, one time, she saved a boy from drowning, and to protect her identity told him to forget about her. She didn't expect him to take the extra step of completely denying mermaids exist! Now she's got to deal with her identity, and also her love for that boy she saved, Takaoka. Includes 3 other stories. Seishun no Susume Ushiro Sugata Hikaretai Mizutama ni Somare!
15 no Yoru is an irregularly serialized anthology manga that deals with societal issues such as neglect of children and the elderly, drug addiction, school bullying, extreme reclusiveness, HIV/AIDS 1.**The Cry of a Nameless Boy**, deals with neglect of children 2.**DIFFUSE**, deals with addiction 3.**You who are being bullied**, deals with school bullying 4.**REBIRTH**, sequel to DIFFUSE 5.**Cocoon**, deals with social withdrawal 6.**AIDS**, deals with HIV related issues
Pairing: Gokudera x Tsuna Reprinted in [Kubyou Azami - Mononoke Hobaku Butai](https://www.mangaupdates.com/series.html?id=176505) (scanlated from this version)