Mikoto Misaka has a younger adopted sister named Wendy and same goes with Kuroko Shirai has a step sister named Chelia when Shirai's mother died due to heart failure. But unexpected that both Wendy and Chelia have equal powers that their sisters did...
Previously on A Certain Sky Slayer Mages in Academy City:
Chelia and I walk together to go to our dorm. As a certain guy have mask on his face and wears black cloak block our way. Excuse me Mister but why are you blocking our way? As I politely asks a certain guy. Are you Wendy Marvell Misaka? The guy ask with some shadow covering on his body. I wonder, how did he know my name? But then, I was surprised when big sister Mikoto speaks by saying, Hey I don't know who you are but no one assults my little sister and her friend. She speaks so angry that's why she's sparking. Shirai-senpai told us to stay back so they can protect us from that strange guy. I need you two Sky maiden mages. That's what he said while glaring on us. I wonder why he wants us, what he's gonna do to me and Chelia?
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Mikoto's POV
Who is this mage? I don't know what is he talking about what he said the Sky Maiden mage. Then he look into his eyes as his eyes look directly to Wendy and Chelia. I don't think those girls are mage cause they are recorded as level 4 Wind Manipulation ability to the system. Does my mom knows something about Wendy? Well then I shall contact her after we settle this creep.
Kuroko's POV
What is this man talking about? When I look to his eyes earlier when he told us that he need those 2 Sky Maiden mage, he looks to Chelia and Wendy. What does he mean? I do believe that our sisters are espers like us, but then if they are Sissy and I should protect those girls.
Kuroko: Who are you talking about the Sky Maiden mage? Is it these two girls? (stern look) (serious voice) ???????: Yes they are, for now I'll leave you two Sky Maidens. The name's Zeref. It's a pleasure to meet you. (grinning)
The mage said it while glaring us with a devilish look on his face. He looks so creepy. Right now, Sissy and I want to investigate our sisters, and I want to talk to our moms ofcourse. After the Dark Shadow mage dissappear we go to Judgement branch office to report what happened earlier.
Judgement Branch 177
Konori: Hey Shirai, Misaka, oh and you have your sisters. What's going on out there? Uiharu: Earlier we saw dark shadows nearby your dorm. What is that thing? (worried look) Kuroko: I don't know, when our sisters walks going to the dorm and then we followed them we saw that dark shadow mage, wearing black cloak and he has red devil eyes. Konori: Well then we must guard each any alleys, parks in every district and also we should track those invaders here in Academy City. Mikoto: And actually the Dark Shadow mage is after Wendy and Chelia. (worried look) Kuroko: The Dark Shadow mage told us that our sisters are the Sky Maiden mage. As of now Konori-senpai, can we have your permission to go outside the Academy City for a day? We need to talk to our moms regarding with this matter. Konori: Ok sure take care of yourselves. Mikoto: Alright, let's go back to our dorms, it's already curfew. Goodbye Konori-senpai and Uiharu.
Then we finally went to our dorms cause we don't want to get punnished by our head resident.
