Ultimate Gamer of DxD

Save 12: No One. Suspects. A Thing.

A/n-warning, not much happens yet
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Well, I just realised how pointless these classes are for me now. All thanks to the [Knowledge Transference] skill. It doesn't work on skill books, as the skill book still gets destroyed in the process, but books and papers about things are now impossibly quick reads, and with it I've found out that science is quite behind in this world.

Magic is good and all, but apparently the church held out for a while longer during the Renaissance, and so things went slower than in my world. Probably because they had actual angels...maybe the alchemists had magic though...so that's a possible plus.

Oh, shit! My mana and aura are leaking out! I gotta fix that! Great Sage-Sama? Can you give me a hand?

Acknowledged, help initiated... Hide behind this wall up here to your left

As I took a quickly leap left, I clung to the wall, as a familiar...Well, familiar flew by, obviously looking for something.

'Okay, so. I have already alerted them to me having powers because of the fact I didn't figure out how to hide it. It's their territory, and they're not bad, but...I don't want to get too involved just like that, especially because I haven't gotten anywhere yet. Maybe I'll just get into their good graces and show up as an outlier instead of the "Rias saw the sacred gear, time to be a devil" route.'

Ding!

Due to a specific action being repeated, the new skill [Presence Erasure] (active/passive) has been obtained

Due to acquiring a specific skill, due to interference and a specific action being taken, the skill [Presence Detection] and derivative skill [Bloodlust Detection] have been acquired

Well, I don't need anything to tell what these 3 skills are...I wasn't even trying to detect bloodlust though. How did that happen?

.......

Well, at least now I can tell when things are approaching, even without this mini map, and I can level up bloodlust detection just by getting popular enough at school and letting anime take its course. It may not have intent to kill, but hatred, bloodlust, and jealousy are still all one and the same, so I'll be able to tell who is an enemy without needing to fully find out with a big red X on their chest, or them trying to kill me.

Phew.

I still need to learn mana shield to restrict what can even hit me, but I still have class, so I can let it wait.
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Michael damn it, these classes are boring. I already went through them, both in my old world, which was to a much more advanced degree, and the fact I have already read the knowledge from the textbook.

All I'm doing now is spamming [Presence Erasure] and [Presence Detection] to see where every person in the building is and get my grips. It started at just the classroom, within my line of sight, but I got a bit more adept at it and expanded it, just like with my [Mana Sense], I experimented a bit, and can now separate part of my consciousness and search the world around me, though that was in itself a dilemma based on the skills functions, so for now, I'll let the Author, or whoever, handle the explanation.
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Good fucking finally. I am not gonna bother with how meta this has gotten, for that is a whole different lesson. But my name is Author, and I shall be your teacher here today.

For those of you who have done your studying, and especially those who haven't, these three skills all function quite well together.

The skills, which allow to separate his own consciousness from his body and travel around, is from the dungeon core magic academy. Now you may be wondering about how he can travel already? Well, he decided to not be bored and spread out his territory to the whole main school building already.