an update newest translated chapter has an AR from a villain (Tama)
http://www.mangareader.net/omamori-himari/43/6 shows the profile child and adult form and the AR happens in the battle (also she is naked well it is an ecchi series...)
http://www.mangareader.net/omamori-himari/43/19
http://www.mangareader.net/omamori-himari/43/21
http://www.mangareader.net/omamori-himari/43/22