Zeref was telling Mavis a joke so they laugh and laugh, then Zeref looked at Mavis and said "Mavis we will be friends forever right" Mavis looked at Zeref then smiles at him cheerfully and said "we will always be together Zeref-kun" Zeref smiled and said "then lets promised that we will be together forever" Mavis nodded smiling then they pinky swear that they will be together always and never be separated until they grow up but One day Mavis died. She was fighting a strong enemy so she used all her power to defeat it but sadly she died, suddenly Zeref came to help Mavis but when Zeref saw Mavis in the grown, he fastly run to Mavis and hugged her and he shouted "MAVIS!". Zeref made her a Grave stone on their favorite tree then Zeref said "you liar... you said you will never leave me" Zeref then touch the grave stone then said "I'm not gonna go anywhere Mavis... i'll stay here with you... I'm not really alone your here... right?... Mavis?" then suddenly their surroundings glow like stars then Zeref smiled then he sits beside Mavis Grave yard then said "Mavis... thank you for being there for me" Zeref then stayed at the Tenrou Island where they grew up together... THE END