This flower is from of a cultivar of <i><a href="//commons.wikimedia.org/wiki/Camellia_japonica" title="Camellia japonica">Camellia japonica</a></i>  (<i><a href="//commons.wikimedia.org/wiki/Category:Theaceae" title="Category:Theaceae">Theacaeae</a></i>), probably Camelia japonica 'Otome' also called 'Pink Perfection'<br>Flower
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/71719923@N00">Angie</a> from Sawara, Chiba-ken, Japan
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/71719923@N00/9910353">Flickr</a>