Tenshi ni Narumon

Japanese Title: 天使になるもんっ!

English Title: I'm Gonna Be an Angel!

Spanish Title: Yo Seré Un Ángel

Plot
I'm Gonna Be An Angel! is the story of Yuusuke Kamoshita who is living alone until he literally stumbles across a naked girl in a forest, a very energetic girl named Noelle. Noelle and her entire family proceed to move into Yuusuke's tiny home, replacing it with a huge plastic-looking castle, and disrupt his life. Shortly into the series, Yuusuke writes a note to his crush Natsumi Suzuhara apologizing for a few "incidents", in which he also exclaims that she is an angel to him. Noelle later finds the note and decides she wants to be Yuusuke's angel. But it seems the boy is not very fond of this idea. Silky and her minions interfere as the series goes on.