Light Novel Volume 5

Summary
After events from the previous volume, Naofumi is able to show the world that he is innocent from his false charges. The king and Main(Malty) are given the rightful punishment. After the Class Up, Naofumi heads to Cal Mira Island to farther level up his party. On his way to the island, he encounters mysterious stranger, L'arc Berg. Events after another, lead battle with L'arc, and finally reappearance of Glass!!!

Extra Story - カルミラ島, 温泉覗き騒動 - Hot Spring Peeping Uproar
On the Fourth night at Cal Mira Island, Naofumi went to the Japanese style hot spring to heal his curse. He meet Motoyasu in the hot spring. After a little talk with Motoyasu, Itsuki and his party came, then Ren and his party, and lastly Firo in her queen form joins the hot spring. They talk about which girls they like and their ranking in order. After Firo left, Motoyasu propose the gang to do a heroic task, to peep at the female side of the hot spring. As no one rejected the idea, Naofumi tries to leave, but L'arc came and joins the gang. They ask Naofumi if he wants to see Raphtalia nude, Naofumi answer he already did (event from Volume 3 extra story). Motoyasu claims maybe Naofumi is that and L'arc make a strange symbol with his hand. Naofumi denies and lefts the bath.

Soon Raphtalia came and told that they are punishing the Hero and their party for peeping, and Firo discover them as soon as they try to peep. Raphtalia ask if Naofumi wants to rent a small hot spring with just 3 of them, he say fine. They went and star gaze and wish upon the shooting stars that they will be together. On the way back, they saw the other heroes been lecture by their female companions. L'arc saw them came out of the shop, and say "AH, Naofumi you were taking bath with the ladies! Cheater!!"