>>2 Agreed

Actually I think it's pointless to speculate on the reasons for which you have been talking less to each other (many possible reasons, and this could easily change). What is important is that you are interested in him, and you have no reason to think that he might not reciprocate, now or in the future.

This leaves you with only one option: arrange ways of spending more time with him, to get to know him better, and to let him know you better. An obvious way is to do stuff related with your common interest in anime, but don't be afraid to look for other ways of spending time together (depending on his and your interests).

If you both spend some time together, it should become clear after a while whether there is a good chance of you getting along,...