Is it Wrong to Summon Heroes?

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Achilles: How's Bell?

Hestia: Still unconscious.

Karna: His skill used too much of his mind.

Arjuna: Hestia, that knife in his hand... is that...

Hestia: Yes. This knife was created by me and Hephaestus as Bell's weapon. A weapon that will grow with it wielder.

Achilles: Hephaestus made it...! Looks like our Bell is the luckiest guy in this world. 

Karna: Hestia, do you know what we call weapons or objects created by the gods called?

Hestia: What are they called?

Karna: Divine Construct.

Arjuna: Armaments created by the gods. Weapons forged by the divinity the gods exudes for the purpose of the armaments creation. These Divine Constructs are very powerful, and very destructive.

Hestia: How... destructive?

Karna: The armaments effects are vary, but they have the capability to destroy the world itself. Well, more specifically, destroy the world's texture. But their power can never be underestimated.

Hestia: Oh my god... Wait, then, does Bell's knife...

Arjuna: Fortunately, you don't have to worry. You said you and Hephaestus crafted this knife for the purpose to be Bell's weapon that will always be his side and grow together with him. With that specific purpose, it won't have the power to destroy the world.

Hestia: Oh, phew...! But, how do you guys know these Divine Constructs well?

Karna: Well, it's common knowledge to know what the gods wield or held in their legends and myths, but all of us here wield a Divine Construct.

Hestia: What!?

Arjuna: This bow I'm holding is a Divine Construct given to me by the god of flame, Agni. And my Noble Phantasm, Pashupata, is also a Divine Constructed wielded by the three gods of our pantheon who are the origin of our universe.

Achilles: As for me, my armor and shield are a Divine Construct made by Hephaestus.

Hestia: Hephaestus made you armor and your shield!?

Achilles: Indeed, though I don't know about your Hephaestus would know that.

Hestia: If she did, she would be questioning until a day has passed.

Achilles: "She?"

Karna: This spear I wield is a Divine Construct given to me by Indra. This divine spear, Hestia, is Anti-Divine.

Hestia: Anti-Divine...!

Karna: This spear has the capability to kill gods.

Hestia: To kill gods!?

Karna: Yes, but it's a only a one time use. The requirement of using it requires a sacrifice of my armor in order to unleash its full power, and doing so will make me vulnerable.

Hestia: So, it's your trump card.

Karna: Indeed.

Hestia: Oh god... these Divine Constructs are powerful, but dangerous if fallen to the wrong hands.

Achilles: You don't have to worry about that.

Hestia: Hm? What do you mean?

Achilles: To wield a Divine Construct, you have to be a god or have a blood of a god. Since the Divine Constructs are so powerful, there's a requirement to wield it. Every Divine Construct requires to user to be a god or have a blood a divine being to wield it. If they don't have that, that person dies.