Himouto Umaru Chan, one of the new anime series for this July, features a
high school girl named
Umaru as a heroine.
Umaru, who is usually a perfect
role-model girl and a student in the public, turns into a completely childish,
lazy, and carefree girl at home. When she does so however, the change in
her behaviors is so drastic that it causes an illusion of her becoming a small
toddler that matches her indoor childishness. But whenever she decides to be
serious or mature, the illusion wears off, and she grows back into her normal
appearance of a high school girl. The scenes where she changes are
animated with process, at least from the looks of the first episode~
Illusion AR (0:35-0:39)
Illusion RN (08:51-08:53)
http://anilinkz.tv/himouto-umaru-chan-episode-1?src=3
Some of you might argue that this is more of a chibification, but since it
involves somewhat of a mental AR as well, I decided that it is an illusionary
AR.