No it is not died and not going to die but nowadays it is a little away from the screen and the reason is that its developer do not work for it to promote in the market they do not support it to implement it in different markeplace. They have to work for it to promote it more to start services with this currency.
when you think, LTC will be up again ?? and why ?
Eh, no. It's kind of like doge, where people don't do a hell of a lot of speculation using it, so the price fluctuations usually aren't as extreme as some other coins. It's far from dead, though. Some people do actually use it for things, also just like doge.