You can't really tell from the photo, but the faces are on heart shaped onigiri inside heart shaped cut out cucumber slices. The center hearts of the cucumbers are on the other side of the bento. It worked out well that the mini heart onigiri mold and my mini heart cookie cutter are pretty much the same size and shape!
There are also some baby tomato flowers with green pea centers, soba noodles with garlic sauce, carrot hearts and blueberries.