The angel outfits really are working here! Rikachan, Yui, and Erika all look soo cute in them! The dance choreography is excellent as well and really brings the song to life. Really I love the dance choreography for this song a lot! The cute hopping and sensual moves great! The song itself doesn't need much help though as it's in my opinion the absolute best song that Biyuuden has released to date. Tsunku has really written a gem for them with this one! The coupling with song is a good one too with a lot of great energy and catchy hooks but it's no where near the level of the title track. "Koi suru angel heart" is awesome! The making of footage is extensive and provides a great look into the photo shoots and PV shooting. Again the angel outfits are making everything really great to watch.
On a last note Erika is now my favorite member of Biyuuden. While Rikachan may be the centerpiece of this unit and Yui the voluptuous one, it is Erika that I really find soo adorable. There's something about her looks that I find special. I figure that I may be all alone on this but she has really grown on me recenly! Victoria's Secret anyone?