@ngalili plenty of things you can do!
1) Watch the anime. If you plan to watch everything from beginning to end, that'll likely fill up enough time to occupy you for at least a month or two.
2) Read the mangas; I don't read them myself so I can't suggest anything to you, but I know a couple of my friends like Pokemon Special.
3) Watch the movies, if you haven't already. Related to point #1 but not entirely tied into it.
4) Role play
5) Play other games
6) Watch other animes
7) Learn how to knit
8 ) Join a band
9) Take a walk in the park
10) Go backpacking for a while
11) Find a stray kitten and raise her
12) Get a Ph.D
13) Replay the games on more time
14) Play Love Live: School Idol Festival
15) Attend a live viewing of the Pokemon Musical (those don't exist anymore, but you can probably find clips online)
16) Watch youtubers
17) Cover your favorite song
18 ) Sleep
19) Replay Pokemon Emerald in particular for its A+ storyline
20) Marry
21) Have grandchildren
22) Win the Nobel Peace Prize
23) Tame a lioness
24) Usher in the Second Coming of Jesus
25) Become a god
Just to name a few things you can do!