Season 2 is said to be coming soon. However, it's been quite a long while and the date for season 2 is unannounced.
Where did you hear this?
No source, no season 2.
The anime is based on the manga. The first season was about 15-17 episodes of manga. There are only 30 episodes of the manga released, so when 1 or 2 episodes will be released there is a chance that there might be a season 2. That's what I think though.