Ever since the third season of "High School DxD" ended, fans have been patiently waiting to hear whether the anime adaptation will return for another season.

In case "High School DXD" season 4 will happen, it is expected to feature major twists, big revelations and new twisted characters. Recently, fans took to My Anime List forum to share their respective predictions on what could happen in the next season.

User Lolimancer came up with an intriguing theory that would most likely transpire in "High School DxD" season 4. According to the user, fans can expect to witness Issei Hyoudou (Yuki Kaji) going head-to-head against the Evil God from Norse mythology, Loki (Takayuki Kondo).

"High School DxD" season 4 will presumably begin with Future Loki escaping the prison with the help of intruders from a different universe dubbed UL (Underworld Lifeforms). He will then use his immense power to travel through time and alter the timeline.

To guarantee his triumph, Loki needs to make sure that the Chichigami will no longer show up in the present timeline. However, it seems that such thing will not be that easy to accomplish as Issei will reportedly get some help from the future timeline.

It is believed that some of Issei's children will come from the future to help correct the timeline. They are as follows Ex Gremory, Kurenai Himejima, Zen Quarta, Shirayuki, Kurobara, Airi Hyoudou, Shin Shidou, Robertina Hyoudou, Helmwige and Ernestine Galnstein.

Using their respective powers, Issei and his children will finally defeat the Evil God from Norse mythology, as noted by ASZ News . With this, the timelines are corrected and all returns to normal.

While nothing is impossible, fans must still take the claims with a grain of salt as nothing has been officially confirmed by TNK yet. Be sure to stay tuned here for more "High School DxD" season 4 news and updates.