from his point of view laying down, his heart is on the left...
Crik...I thought he saaaaame thing!! Lol guess if its beating hard enough you can feel it anyway...
I thought that too, but I guess I have to agree with Ceres. Lol. Dats one loud heart
Chapter 16, page 13 : http://www.mangago.me/read-manga/kibun_wa_joujou/mf/v01/c006/13/
... Do we tell him that his heart is on the left side, and not on the right side of his chest ? x)