loki learns of frigga's death

Yes, Loki did kill Frigga in some comic storylines.

One possible plot could be that baby Loki has a special power that he doesn't know how to control yet. Frigga, being his mother, tries to teach him. She might take him to a secret place in Asgard where he can practice without harming anyone. As they spend time together, Loki starts to understand his power better and also forms a stronger bond with his mother.

The relationship between Frigga and Baby Loki is complex yet loving. Frigga is aware of Loki's different nature compared to Thor. She showers him with affection, but also has the difficult task of preparing him for a world that may not always accept him. She encourages his inquisitive mind and his unique abilities. At the same time, Loki looks up to Frigga with a great deal of admiration and love. He trusts her completely, which is a rare thing for Loki as he grows older and becomes more distrustful of others.

The most obvious relationship is that of a mother - son. Frigga is likely to be protective, nurturing, and guiding towards baby Loki. She would be there to comfort him when he's scared or in pain.

One idea could be Frigga teaching Baby Loki magic in a secret garden on Asgard. She could show him how to make flowers bloom with his powers. Another could be a story where Baby Loki gets lost in the palace and Frigga has to search for him while also protecting him from those in the court who might not like his mischievous nature.

Thor might initially go into denial. He can't believe that Loki is truly gone. He may hold Loki's body for a long time, as if waiting for him to come back to life. Then, he could become angry. Angry at the situation, at whoever or whatever caused Loki's death. Eventually, he may find solace in the memories of Loki. Remembering the good times they had together and using those memories to move forward.

Yes, in some comic storylines, Loki has had interactions or knowledge of Death.

In this fanfic, Naruto might face some really tough challenges while learning the Reaper Death Seal. He could be in a situation where he has to sacrifice a lot to master it, like maybe losing some of his relationships temporarily. Also, he might have some sort of spiritual journey to fully understand the power of the seal.

Perhaps an unknown hermit living in some far - off place. In many fanfics, there are mysterious characters that pop up with unique knowledge. This hermit could have mastered the Reaper Death Seal long ago and sees Naruto's potential, so decides to teach him.

Well, in this 'avengers meet frigga fanfiction', it could center around Frigga using her magic to help the Avengers in some way. She might be a key to solving a mystery that the Avengers are facing. For example, she could have knowledge about an ancient artifact that the bad guys are after, and she teams up with the Avengers to keep it safe. Also, there could be some emotional moments as the Avengers, who have lost so much, find a mother - like figure in Frigga.