I think you might be referring to "High School DxD", which is a popular Japanese light novel series that has also been adapted into anime. However, there isn't a second season officially titled "High School DxD 2" that I'm aware of.

The series has had multiple seasons and OVA episodes:

1. High School DxD (Season 1) - 12 episodes

2. High School DxD (Season 2) - 12 episodes

3. High School DxD (Season 3) - 12 episodes

4. High School DxD (Season 4) - 12 episodes

5. High School DxD (Season 5) - 10 episodes + 2 OVA episodes

6. High School DxD (Season 6) - 12 episodes

If you're looking for information about a specific aspect of the second season or have a different question about the series, please feel free to ask and I'll do my best to help!