Your browser does not support grid, so will not be supported. Hover over your browser version to see if there is a way to enable potential support. Sorry, I am no longer able to justify working on making the layout work on older devices.
Kuroiwa = black rock. Shuuta = transliteration of 'shooter'. For the record, I should also add that most names that end with '-ta' (that specific kanji too), are boy's names.