Who is The Mysterious Dark Knight?

Xen and Eustass were talking with a smug face laughing how rena moans while getting cucked, Kairo fainted in the floor full of blood, injured, fractured many bones, can't moved even his body

[Eustass : I'll go throw this boy into cliff Niichan just have fun there and we'll go into the mansion to start the ritual between this twin maid (Rena And Julia).]

Eustass starts carrying kairo with pale and fainted, a lot of blood were spilling on the floor while he was handling it out of the cave,even fainted and halfdead kairo was concious all along and hear what the two brothers said,eustass punch and kick kairo off the cliff and fell into the water while it was raining.

 Eustass was hypomaniacally and starts laughing while kairo drowning, Eustass leave the cliff and go back to cave. 

[Xen : Welcome back brother! did you properly obviate the devil?]

[Eustass : Yesss!! HIHIHIHIHIHI He was drowning, drowning ughh!! Im! Envious that he has some gruesome death~]

[Xen : Lets go to mansion Eustass] 

[Eustass : All right, all right] 

Eustass carry Rena on he's back and goes to mansion and walk the way through, Ryona And Julia was a running into the village and found nothing but a burned-out houses and a Corpse of the Villager. Xen appears in the back and calls Ryona And Julia. 

[Xen : How.... Gruesome...] 

[Ryona : Don Xen!! Your.... Backk!] 

Ryona was crying in happiness and fluttering through his overjoyed feeling seeing Don Xen Again. 

[Julia : Don Xen!!] 

[Xen : What happened here??] 

[Ryona : /sobs*... The shadow daimidaler is back and attack the village then kidnapped rena] 

Ryona explains all the thing that happened in village. 

[Xen : I see.... Leave this to me for know guard the mansion or they will destroy it! I have a feeling they will camp there] 

Xen was smiles like an demon preparing for a meal. 

[Ryona : Yes!]

...... 

......... 

...... 

Ryona back in the mansion and see the fountain full of dead bodies of the villagers, the floor was flood with blood, a lot of internal organs and intestine were scattered around the grass. Ryona and Julia see's it and puke into the ground. 

[Ryona : H-how g-gruesome......] 

[Julia : Neesan!......] speaks while crying. 

They continue to walk into the mansion door and opens it, after they opens it Eustass sitting on a chair while Rena is naked in Crucifix. 

[Julia : Rena neesan!!] 

[Ryona : Rena Kun!!] 

[Eustass : Oi! Oi! Sorry to cut your heartwarming reunion but im here too! HIHIHIHIHHI] 

A man with a sword circling around his wrist enters the room. 

[Xen : Dont forget im here too!] 

....... 

........... 

...... 

A black haired knight in a uniform appears in the cliff and dives to rescue kairo from drowning.

[... : Oi! Are you ok??] 

[Kairo :.......] 

Kairo couldn't speak because of the trauma and and lots of injury. 

[... : Coming and felt your presence here was a fortuitous chance, you have done making your fighting aura high so that i can feel it,worry not kid im here to save you im a knight .] 

Kairo tried to raise his head a bit and reach the knight face. 

[Kairo : Please.... S-save t-them....] fainted speaks

[....: Hmmm.... This place is Mathers Household??....] 

[Kairo : Y-yes... T-heeyyy..... G-] 

Kairo fell unconsciously while speaking, he stand and carry kairo in his back with full of blood that got washed by rain. 

[....: It was my hunch from the start.. Xen Mathers.... You're really a demon] 

End of chapter 7.....