ESRB Dices Up Deathsmiles

What did the watchful eyes of the ESRB find questionable in Deathsmiles? Splotches of blood and some suggestive poses are listed in this description.

This is a side-scrolling shooter in which players control one of five small characters that fly through the air and destroy fantastical creatures to save the world. Players shoot an array of projectiles (bombs, bullets, scythes, swords, etc.) at pumpkins, spiders, apples, and monsters in constant air battle. Enemies and objects explode in fiery bursts, breaking apart into tiny, brightly-colored particles; when players are hit, small droplets of blood will scatter. Blood also appears on the face of a giant boss creature’s head. A menu screen depicts the five central characters posing suggestively in revealing outfits. A couple of static images depict the female characters with partially exposed pelvis and buttocks (e.g., a fairy creature and the heroines bathing). Language such as "a*s" and "bastard" appears in the game.

Partially exposed pelvis? Is that an ESRB first?