Last time, we see Y/n was in pain and sorrow because his little brother, Issei, have died of the woman with black wings and something in his head access his potential and say Rias and her peerage.
She used her magic in order to revive Issei and told Koneko to pick him up but Y/n asked her.
Y/n: What're you doing with my brother?!
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Rias: We're just taking your little brother back to your house in his room and have to erase his phone number to the fallen angel he met.
Y/n: A what?! We'll talk about fallen angel or whatever, ok? But please, look out for my little brother. I know he's a pervert and claiming that he wanted to be a harem king or whatever that means, but I like him as a older brother and I failed to protect him!
He was about to cry his tears out but Rias walk to him, hold him in her embrace and reassure him that they'll keep an eye on him but he knows that he can trust Rias because she's like a kind soul to him and her peerage because Rias treated them as a family that she cares about.
Then we cut to the morning after Issei's death, Y/n woken up in a somber mood but Musubi was concerned for him, when they walking to his school Issei asked Y/n a question from last night as he said that Rias need to talk to him after school causing Issei to be confused and Y/n was glad that he was ok but Issei race him to the school.
While Y/n was walking to the school, he saw a bunch of people and saw the same twins from yesterday.
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Y/n: (It's the same twins from yesterday.)
One of them said to him to offered something to drink as they take a seat and the same thing as Y/n.
??? 1: So, did something happen to your brother?
Y/n: He just got killed by a woman with black wings and looks similar to Yuuma amano I met yesterday.
??? 2: I'm sorry for hearing that. By the way, we've never told you our names. The one in the blue is Hikari, and I'm Hibiki, her twin sister.
