For all those bored during this CNY, waiting around during the lull periods between visitings, try this for a time killer :)
The fan-made Nanaca Crash is made after the eroge "Cross Channels". Detailed instructions about the game can be found on its Wikipedia article
In this game, you replay a monday morning, in which Nanaca crashes in Taichi (the poor guy) and send him flying sky high.
With each bounce, Taichi has a chance to "unintentionally" bump into the girls of the anime series, and get whacked even higher into the air.
Through out the game, you can also summon Nanaca to perform a "mid air-collision" aerial boost to send Taichi higher towards the stars. The red upwards boost can be used 3 times, while the blue downwards boost is recharged with each bounce. 
And... if you manage to hit the specific girls in the right sequence, as shown in the special bar on the right, Taichi might be in for a "double-team". Remember to click on the word "Special" to activate it though :p
Difference special boosts affect Taichi differently, like the sword boost shown below.
Finally, after a hard day of being smacked around like a rag-doll, Taichi finally ends the day with a rather soft landing ^_^x.
Hilarious game that it easy to pick up, but hard to master. My high score is as shwon above ^_^x. Manage to get it by completing the elusive Youko special ^_^x Too bad, didn't get a screenshot of that amazing boost though :(