In High School Dxd With Powers Of Nanatsu No Taizai

Since Serafall had to find out what that black cocoon was and what faction was behind it, Serafall stayed in the human world for several months to find out which faction was responsible for the incident.

"Linet-chan, can not we go back already? We have been observing the area and nothing abnormal has happened, so it's time to go back. Surely Sona-tan misses me a lot "exclaims Serafall with a pout.

When observing the aptitude of Serafall, Linet rubbed the temple and comments.

"If it were not for a certain person who can not remember where the house was, it would not be necessary to stay in the human world for so long," Linet exclaimed.

"I've already told you several times, I did not look where I was flying, I just let myself go until I felt the magical energy was gathering and once I teleported, I did not have enough time to leave a mark." Serafall frowned. And reflect.

Serafall does not speak anymore. She spread her wings and grabbed Linet's hand to pull her behind her back as she flew in a particular direction.

"What happened Serafall-sama?" Linet asked as they flew.

"Remember when I said that the magical energy was gathering in the house?" Serafall asked. "Do you know what kind of magical energy was being absorbed?

Linet frowned and reflect. "Was it absorbing a specific type?"

"At the moment when the magic energy began to be absorbed, it came together in a single point at a remarkable speed, but not all of it was absorbed, but only one specific type. And the remaining energy was immediately dispersed due to the black substance." Responds Serafall

"But we do not know what kind of energy was being absorbed." This, we knew from the beginning, but how would they know what kind of magical energy was being absorbed?

"We may not know, but if I use my devil energy in the area and mix it with the environment, we can know what kind of energy has been absorbed depending on the amount that reacts to our energy. Although it has been several months, we can know it because the amount of magic in the human world is scarcer than in the devil realm. The energy that was absorbed, will not recover fast enough and more if you have continued to absorb the same type of energy," explained Serafall.

"But if we do that, twill alert those behind this," Linet added.

"I've already thought about this, because if I use my devil energy. It will alert those responsible, but if I mix it with the environment and use small quantities, we will be able to discover where is the house depending on where my magic goes" Serafall finishes explaining and prepares to expel her magic energy.

She gestured with her hand and a magical circle appears that begins to expel her devil aura in small quantities that extends throughout the area and as if it had come to life, the devil energy begins to move to a specific area. Serafall, seeing this stops and follows where the energy goes.

Once they reach the point where the magical energy meets, It can be seen, the house of the Tomika.

"It looks like this is the place, and the devil energy here is scarce, so it had to be the work of devils, but what faction will it be?" Linet asked.

Once inside the room, they search around the house until they are interrupted by a voice.

"Excuse me. Who are you?" Seeing two strange women in her house, one dressed as a magic girl and the other as a maid, Satomi was at first frightened, but seeing her outfits, she looked at the two women with a strange face. (Are they perverted thieves?).

Watching Satomi, Linet stands up and looks into her eyes.

"We're just visiting, there's nothing weird here, you can go"

Looking into Linet's eyes, Satomi feels dizzy and lightheaded.

"Yes, there's nothing wrong." Finishing her speech, she leaves.

Seeing Satomi leave, Linet nods with satisfaction and heads to Serafall.

"There seems to be nothing strange about the house, maybe those responsible for the incident hypnotized the humans who live here to use the house as a temporary base."

" Yes..." Serafall responds with a weak voice as she looks towards where Satomi disappeared: "It's time to go back, it seems the house was a bait to distract us."

Seeing Linet leaving the house, Serafall makes some hand gestures and a magic circle appears on the floor, observing the mark, Serafall nods and gestures with her hand to what the magic circle quickly disappears, After verifying that there are no marks, Serafall follows Linet. All this in less than a second

----

That same night at the Tomika house, a magical circle appears accompanied by a figure.

"What it took me to get rid of Linet. Sirzechs-chan is careful, putting her to watch my movements" Murmurs Serafall to herself.

At the time Serafall appeared, the Tomika family who was having dinner is surprised by her sudden appearance in the middle of the room.

"You must be joking," Leo thought to himself, who was sitting on his baby table.

"Sorry, who are you? and how did you appear?" asked Suezo while Satomi ignored her as if there was nothing strange.

Looking at Suezo, Serafall uses her hypnosis on him.

"There's nothing strange here, I'm just visiting."

Leo: "..." (WHAT ARE YOU DOING? It's Leviathan, one of the four Maou is not someone you should invite to eat).

While Leo mentally insulted his father. Serafall reflects for a moment and sits down to eat.

After she finishes eating, Satomi begins to pick up the plates and Suezo loads Leo while patting him on the back.

"Did Satomi-chan help you carry the dishes? Serafall asked with a smile.

Leo: "..." (This must be a dream)

(-_-)

Listening to how Serafall calls it, Satomi smiles and answers: "Serafall-san is not necessary. You're a guest so you don't have to worry."

Listening to his mother, Leo rolled his eyes. He had seen how since she started calling her "chan" his mother changed her attitude immediately.

"Well, you don't have to help me. Honey, can you come to help me?"

"All right."

Giving Leo, Suezo heads to the kitchen.

"Well, it looks like we're finally alone Leo-chan"

"Da da da da da" (I didn't want to be)

"Jejeje, so cute you are Leo-chan. For a moment I was not sure since you were a little far away. But now that you're close to me, I'm sure it was you who gave me the same feeling of familiarity as that black substance."

"Da?" (What black substance are you talking about?)

"But the weirdest thing is that you weren't even born Leo-chan. Did your Sacred Gear manifest itself because it detected that you were in danger? Then why was it absorbing demonic energy?"

While Serafall was talking to herself, Leo was in Shock.

She knew about the incident of "decontrol" and the "black substance" is dark matter. Now, what will I do? I asked to reincarnate into a human family to avoid contact with the devil factions, to have more freedom to move and not to know about my powers until I could protect myself.

"Well, what should I do with you, Leo-chan?"

Listening to Serafall, Leo begins to feel his sweaty back.

"Da da da da daaa!" (Please don't use me as an experiment).

Wait. Wasn't Serafall a sis-con? Then the only thing that can save me...

"Onee-chan," Says Leo trying to act as cute as possible

"As you said Leo-chan, repeat Leo-chan. Come on." Excited, Serafall says the last sentence with a begging voice.

"Onee-chan, Daisuke" Repeating in a clear voice, Leo uses his baby charm at its maximum power.

"Ahhh, so cute" Listening to Leo, you can see the hearts in Serafall eyes.

"DA!!" (No)

"Serafall-san, will you come to visit us another day?" asked Satomi who had left the kitchen.

Going out of her thoughts, Serafall answers: "Yes, I will come back another day".

"All right, remember, you'll always be welcome."

"All right."

Receiving her approval, Satomi returned to the kitchen with a big smile.

"Well Leo-chan, it would be sad for you to be separated from your parents so I'll come back later. But don't say anything to Sirzechs-chan, he'll be very upset. OK"

"Daabu!" (You can count on me)