User blog comment:B214/High School DxD EX/@comment-3965848-20150726181551

Here's how I think the story play's out

Future Loki goes back in time to tell his past self his upcoming events (involving Chichigami and his defeat by Issei and co) and tells him to prevent it which is where everything changes when he made an earlier appearance in episode 3.

Despite all the changes Loki still fails at the end of Born and I think nothing much would change after that; like they still have that school Kyoto trip to go to, they've already agreed to have a RG with Sairaorg and so on.

But with Future Loki still in the past he still has a chance to do something that could possibly prevent all that, such as maybe killing Asia which is were the kids come in after following him into the past. In the end Asia dies, so they make another time jump to stop future Loki from ever changing anything, thus restoring everything back to how it was in the LN.

This is just my general guess on how it will be like.