"you're my only one" (dxd harem x male oc)

Betrayal: the final straw, a new student arrives.

In the ORC building, a surprising betrayal is taking place.

Rias: why? Why would you betray us Issei?
Issei: it's nothing personal. Riser just gave me a better deal.
Rias: you know he's forcing an arranged marriage with me!
Issei: even better for me then.
Akeno: can I punish him now Rias?
Rias: go ahead Akeno.
Kiba: this oughta be good.
Asia: (to think he was the one who saved me from the fallen angels. How could y Issei?)
Koneko: I never liked you perv.

Everyone is Rias's peerage attacked Issei without hesitation.

A/n: yes including Asia because she uses a sword thanks to Kiba.

Issei managed to escape but only by the skin of his teeth. The next day, after his betrayal, a new student has appeared in kuoh academy.

Toad: I hope you missed me Akeno, my dear sister.

In the ORC building.

Akeno: it looks like he's here.
Rias: who is Akeno?
Akeno: my brother Toad. It's because of him that my mom is still alive. You should add him to your peerage Rias.
Rias: I think I will. Besides, Ddraig could use a new host.
Ddraig: finally a better host than Issei. Is he a massive pervert Akeno?
Akeno: only a closet one. And I have a brother complex. Just to let you all know, he was adopted into my family after his was killed by his fellow fallen angels. His last name was Skywalker but after my family adopted him, he took the name Himajima. During the time he was with my family, he protected my mom from the rest of the Himajima family.
???: are you telling the story of when I was adopted into the family Akeno?
Akeno: hi big brother!

Akeno ran to her brother and hugged him.

Akeno: I've missed you!
Toad: I missed you too sis. Still into S&M?
Akeno: maybe.
Toad: *ruffles her hair* jeez what am I gonna do with you?
Rias: it's very nice to meet you Toad. Akeno told me so much about you.
Toad: did she say that I take after my dad?
Akeno: no you don't. You take after me and mother.
Toad: oh yeah that's right.