Every episode from the first season of the Japanese anime where university student Naofumi Iwatani (voice of Kaito Ishikawa), along with three other young men, enters a parallel world in which they are heroes destined to protect the citizens of the Melromarc kingdom from the Waves of Catastrophe. Armed with only a shield, Naofumi is belittled for his lack of attacking prowess and when his only ally betrays him, he is further regarded in a wholly negative light.

As he trains alone Naofumi grows determined to prove to the kingdom that he is a worthy hero and when he makes two purchases, a rare egg that hatches into a fighting bird he names Filo (Rina Hidaka) as well as a demi-girl named Raphtalia (Asami Seto), his luck may be about to change.

The episodes are:

• 'The Shield Hero'
• 'The Slave Girl'
• 'Wave of Catastrophe'
• 'Lullaby at Dawn'
• 'Filo'
• 'A New Comrade'
• 'The Savior of the Heavenly Fowl'
• 'Curse Shield', 'Melty'
• 'In the Midst of Turmoil'
• 'Catastrophe Returns'
• 'The Raven Invader'
• 'The Devil of the Shield'
• 'Everlasting Memory'
• 'Raphtalia'
• 'Filolial Queen'
• 'A Promise Made'
• 'A Conspiracy Linked'
• 'The Four Cardinal Heroes'
• 'Battle of Good and Evil'
• 'Naofumi's Triumphant Return'
• 'Four Heroes Council'
• 'Cal Mira Archipelago'
• 'Guardians of Another World'
• 'The Rising of the Shield Hero'