Lyra is Orpheus' constellation. He's the mythological musician who walks down in the Underworld, charming Cerbere, and makes a deal with Hades to bring back Eurydice with him. However, he fails and looses her forever, and from this moment, he's haunted by what he saw in the Underworld. After his death, the muses places his lyre in the sky to create the constellation honoring him.

In Metal Masters, Toby makes a deal with Ziggurat (though he's unaware of it) to be able to Beyblade again. As Faust, he teams up with Damian, Kerbecs' owner. He's strong enough to use a Beyblade but he can't enjoy it the way he used to. Faust is only a shadow of who Toby used to be.

In anime, there are two way to handle scars:

- trying to cover it

- wearing it shamelessly (either because the character is proud of it, or doesn't care about his physical appearance)

This is based on basic psychology. When the scars are provoked by an accident or an agression (in other words, a bad memory), the character tries to cover it (with make-up or their haircut if it's on their face, with covering clothes if it's somewhere else). Otherwise, they wear it freely, not seeming to care about it.

Kyouya belongs to the second category. With that, we know his scars aren't linked to something that traumatizes him. After all, he sees them everytime he looks at a mirror or sees a photo of himself (like when the DJ Blader introduces him during tournaments). If it was a bad memory, he would try to cover his scars to not think about their cause everytime he sees his reflection/image.

And, since Kyouya likes his style, we can suppose he cares about his physical appearance. So, it means he's proud of his scars.

Then, we have the official information from the author:

here, a tumblr post showing the drawing from Takafumi Adachi

and here, a question asked to him.

Kyouya got his scars by protecting his little brother, Kakeru.

So, everytime he sees them, he remembers he succeeds to protect Kakeru, who didn't even get a scratch from their accident. It's like they tell him "you did a great job protecting your little brother".

I thought this catfish was an exaggeration for comic purpose.

Then I learned catfishes can grow big. Like very big. So I did some researches. Catfishes are 1,5 m (59,05″) to 2 m (78,74″) long. Some specimens can be 2,7 m (106,29″) long.

And you know what? There is an urban legend that says some catfish lurk into shallow water to prey on humans (thought there aren’t proofs of it... yet xD)

In the original version of Beyblade Metal Fight, Benkei calls and refers to Kyouya as “Kyouya-san” (could be translated by Mr. Kyouya). In English and French, they translate this by Kyouya pal and Kyouya mon pote (approximatively the same thing). So we lost the accepted and assumed hierarchy that exists in their relationship.

I think the honorific suffix “-san” makes their relationship more balanced, because it means that Benkei doesn’t say every sentence or so that he and Kyouya are friends. Their relationship isn’t based on a one-sided affection, but on respect. In this case, the translation throws everything off balance.