The story revolves around a girl named Yuuka, who encounters a being from the depths of the Earth named Chii-chan (a pun of chiteijin, the Japanese word for underground-dweller), and an alien named Ucchan (a pun of uchuujin or alien). The story follows their heartwarming and chaotic everyday lives together.
Just another anime about a bunch of cute creatures living with a girl. You can skip the "SPOILER" paragraph, although it's only very minor spoiler.. anyway please enjoy.
The cute creatures this time are... basically what I just said. I can't explain any further than that, anyway they have their own reasons for being in the care of Yuuka-san. Yuuka-san is an ordinary girl who enjoys helping people out. In the first episode she helped someone in the first few minutes of appearing. You probably understand by now that she is a nice girl who would look after even creatures she wouldn't even think existed. Considering
what has happened so far you can assume that Yuuka-san and co. will hear out anyone in the need of help. It's more or less because of Yuuka-san personality, of course these cuties don't mind. So far one of the creatures, ................. (1). The other is from the depths of earth who can't go back down (I think it was all that candy he ate). In any case, they are happy with Yuuka-san and try to find their way back to their homes at their own pace.
The animation is similar to the other OLM anime, this way it's really cute and childish. I tell you this now, don't go into this anime if you think it's any better than the other cute OLM anime. It's not that interesting so don't say I didn't tell you so.
For this Anime, there was not one episode where I would feel bored watching. It captured my attention through all of it because of how cute the creatures were. That's not the only reason, the other reason was that the episodes were short, quick, and to the point with a detailed story. It was more like a magical girl type of theme where an instrument would be used by the main character and it would summon powers!
What could've been better was if the actual plot had at least a bigger reason... I understood that Chi-chan had to repay his debt (since Yuka-chan saved his life),
but I could tell he wasn't doing a really good job, so the storyline was a bit wonky.