Fitoria/Chronology

Volume 3
Once paroling human grounds in her disguise, she came across Melty who was thrilled to see a new variant of Filolial and offered her jerky. Fitoria ignored her and ran away. But, Melty used her carriage to chase after her. Soon it becomes a game of tag. Fitoria saw her caring nature towards Filolia and was impressed. They ended up in a dragon area, where Melty put herself to save the filolial which pulled her carriage. Fitoria appeared and defeated the dragon and saved Melty and her Filolial.

Fitoria healed Melty and her Filolial. Later, she let Melty play with her herd before sending her with few of her subordinate to the human town where she ends up with Naofumi. Her subordinates spotted Filo and informed Fitoria about the new Filolial queen. Fitoria went to find if the new queen is worthy of the title.

Volume 4
Fitoria and her army of Filolials locate Naofumi's group and save them from the sealed ancient monster Tyrant Dragon Rex. Fitoria is able to strike down the T-rex demon in a single blow, stunning Naofumi's team with her legendary strength. Naofumi uses the dead T-rex to upgrade his shield powers, but Fitoria warns him that one day he will not be able to control the dark powers of a cursed shield (Rage Shield).

Fitoria brings Naofumi's team back to her home-camp, a site of ancient ruins. At night, she questions Naofumi about why during the Wave of Catastrophe the Four Heroes were absent from the rest of the globe. This is the first time Naofumi learns that each hero was supposed to be summoned to different countries, not just Melromarc.

Fitoria also demands Naofumi to mend his relationship with the other three heroes and work together. Naofumi refuses, saying that it is impossible to work with them after how much they have betrayed and backstabbed Naofumi. Fitoria then threatens to kill the four heroes if they do not work together, saying that after they die, the world will summon four new heroes, which she claims will benefit the world in the long run.

After Naofumi still refuses to work with the other heroes, Fitoria forces a duel with Filo by taking Melty as a hostage. If Filo loses, Fitoria threatens to kill all the heroes, and if Filo proves her strength, Fitoria says she will release Melty and not kill the heroes for 'a while'.

During the duel, Naofumi tells Filo not to give up and stay strong. That reminds Fitoria how her former hero raised her. Indeed, although Filo is outmatched by Fitoria, Filo continues to fight and attack, once even breaking Fitoria's magic shield with a spiral strike, shocking everybody.

After the duel, Fitoria is satisfied with Filo's ability and determination. Fitoria then chooses Filo as her successor, saying that the duel was a trial. Fitoria gives Filo a tiara and cowlick to symbolize Filo's new queen status. She also unlocks all of Naofumi's Filolial Shield Series. The gang celebrates the anointment of a new queen.

At night, Fitoria again pleads Naofumi to mend his relationship with the heroes. She says the future waves will be much stronger and that the heroes will die soon if they do not work together (as they are still too weak alone). She asks Naofumi specifically because she rates him higher than the other heroes, especially because Naofumi helped raise Filo, the new Filolia queen. She encourages Naofumi to go back and clear his name, saying that if he does not tell the other heroes they are wrong, that would be a tacit admission of guilt.

She also says that in the future, there will be a big calamity wave that will require great sacrifice. The heroes will have to choose whether to save the world or the people. She has experienced such a moment before with her old hero but says she does not remember much. While most heroes choose to save the people, they all failed.

In the end, Naofumi agrees and says he will try his best to mend ties with the other heroes. This reminds Fitoria of her former hero, and she then lies her head on Naofumi's lap. She casts a spell on Naofumi's shield to slow down its corrosion due to the effects of the Rage Shield. Naofumi then asks if her former hero was the Shield Hero. Naofumi says she forgets as Filolials have short memories. But judging from the similar green color of her former hero in her flashbacks and her knowledge of the Rage Shield curse, it is heavily implied that her former master and mentor was the Shield Hero.