The AkuMa Series is a trilogy created by uniMemo-P and Bucchigiri-P as a collaboration.The plot behind this messy series talks about how Rin receives the help of a demon girl called MaRin to finally confess to her love, Len. MaRin lends part of her power to the original Rin, thus transforming her into a demon girl too. Then both Aku MaRins assault Len in an attempt to conquer his heart with disastrous (yet hilarious) results.