Busu ni Naranai Tetsugaku (ブスにならない哲学; A Philosophy for not Becoming Ugly) is Hello! Project Mobekimasu Debut Single. It was released on November 16, 2011 in 7 Editions: Regular & Limited edirions A - F. The Limited Edition A version comes with a bonus DVD and Limited Editions B - F feature different coupling songs.
After Maeda Yuuka left Hello! Project , her lines went to Fukuda Kanon