Dog Days'

Three months after leaving Flonyard, Shinku returns to Biscotti along with his friend Rebecca, while his cousin Nanami is summoned to Galette by Leomichelli and accepts to become her hero. After a brief reunion with Millhiore and his other friends, Shinku takes part in a special battle celebrating his return, soon after Nanami also joins the fight while Rebecca stays back at the castle with Millhiore. Watching the battle at her castle, Couvert, the Princess of Pastillage, decides to set off for Biscotti to ask Rebecca to become her hero.

With one hero at each side, the special match between Biscotti and Gallete intensifies until the Pastillage army led by Couvert join the battle. After abducting Rebecca, Couvert has her forces confronting Shinku and Nanami's teams while she convinces Rebecca to join her side and be Pastillage's hero.

Couvert and Rebecca join the fight and the three-way battle becomes even more intense until it ends with Gallete's victory. Shinku takes Nanami and Rebecca for a tour around Biscotti before he embarks for a special training camp with Éclair and Yukikaze.

With the war games over each Princess has gone back to their respective kingdoms. Sink, along with friends, are spending their time training in counter-monster skills.

Highway Bandits are ruining the lives of the people in Ayase. Nana, Vert, and Jau head out to stop the bandits but meet a much more interesting character.

Couverte and Sink have accidently released the Demon King from his sleep. Even with all the heroes powers combined he proves to be a formidable enemy. Only the Hero King can stop his rampage.

A seal in a cave of monsters has been broken leaving the Heroes of old to call in the new generation.

Millhiore is invited to sing at the Esnart Art and Music Festival in Pastillage. Just before her performance, the princess and Rebecca are attacked by a rogue cat deity who tries to steal their jewels and Shinku leads a team to catch her before she causes more trouble.

A new war between the nations is about to begin but Biscotti's Captain of the Imperial Guard is having problems that will lead Biscotti into ruin.

One on one battles continue with Becky vs. Millihiore, Rebecca vs. Hina, and Sink vs. Gaul. A wild card appears to shake the battle up even more.

The Union Festival comes to a close, and Millihi and Sink take some time to relax at Yukikaze's house. But things take an unexpected turn when Millihi finds a strange crystal, and the three are engulfed in a blue fog...

Wanting to get a gift for Rebecca, Couverte along with Rico and Noir descend into the vault underneath Castle Eschenbach. All the traps should be disabled in this ancient maze, right?

Shinku, Rebecca and Nanami spend the final days of their stay on Flonyard alongside their friends. The night before their departed, Shinku and Millhiore talks about the last time they parted ways, remembering how she confesses to him and how he answered back. The Princess requested to Shinku to hug him for her to remember Shinku's "warm and happy" hug. Each of them also receive from their respective rulers a special present before they are sent back to Earth, with the promise of returning in the near future.