Today Compile Heart and Felistella released the first trailer of Genkai Tokki Seven Pirates, releasing in Japan exclusively for PS Vita in the Summer.

Genkai Tokki Seven Pirates is a JRPG at its core, but features a rather "interesting" mechanic. You can rub each character's breasts bigger or smaller. By making them bigger, you raise their strength, by making them smaller, you raise their speed.

You think I'm joking, don't you? Well, just check out the trailer below.

During the Dengeki Thanksgiving livestream from Tokyo, Compile Heart also showcased slides introducing the main cast (the titular "seven pirates"): Besides the protagonist Parte Kairi, each girl represent a typically Japanese "monster musume" trope, from the dragon girl to the slime girl.