Heart no Diamond
- Volume 03Chapter 11-14.5
- Ch 14.5 Nov 7, 2016 Ch 14 Dec 25, 2012 Ch 13 Dec 25, 2012 Ch 12 Dec 25, 2012 Ch 11 Dec 25, 2012
- Volume 02Chapter 6-10
- Ch 10 Oct 12, 2011 Ch 9 Sep 13, 2011 Ch 8 Aug 5, 2011 Ch 7 Jul 8, 2011 Ch 6 Jun 14, 2011
- Volume 01Chapter 1-5
- Ch 5 Jun 6, 2011 Ch 4 Jul 19, 2011 Ch 3 Dec 29, 2009 Ch 2 Dec 28, 2009 Ch 1 Jun 6, 2011
Himeno's chest will hurt if any boy touches her because she has the diamond of the heart. However, when she was young, she befriended two boys -- the gentle Mamoru and the blunt Keigo -- who are able to touch her without harming her. Without knowing about the diamond of the heart, both Mamoru and Keigo promised to protect Himeno. When some people threaten to take Himeno's heart, who else will protect her but her knights?