24 Irregular Magecraft at Magic High School

Before we start, I'm aware of this concept being similar to Type-Moon Irregularity, but that novel was dropped. I'm not suggesting a system, I saying he should gain the knowledge of Magecraft when he becomes a certain age (Either reincarnation or insert). I'm not sure which age would be appropriate, so I'll say 4 or 5. That should give the MC enough time to become proficient with his new abilities.

So, it should be obvious without saying, but the MC will be born 17-18 years before the main plot. I think he should come from a family with no history of Magicians, that way there will be no conflict between his Magecraft and the Magic his family practices. You could put him in a magic family if you think that it'd be more interesting that way. You could even have him be born to one of Ten Master Clans if you really wanted to spice things up.

Now, on to the topic of Magic Circuits, which changes how effective a Magus is. This is difficult, because I'm not completely sure how strong he should be. I mean, he should at least be evenly matched with Tatsuya, possibly stronger. But I don't know how to quantify that with Magic Circuits. So, I'd say baseline 50 inborn, maybe 40 sub. If you want, you could give him a Magic Core instead, but where would he get Dragon Blood? I'd give him high-quality Circuits as well, putting him far above Rin. Feel free to add more or less, if you feel I'm not giving him enough.

As for the Magecrafts he'll be learning, I've chosen several systems for him to use, those being: Alchemy, Flowing and Transferring of Power, and Material Transmutation. From Alchemy he'll gain Memory Partition, Thought Acceleration, and Transmutation. From Flowing and Transferring of Power he'll learn Jewel Magecraft, Healing Magecraft, Shared Perception, and Transference of Consciousness. Finally, from Material Transmutation he'll learn Gradation Air, Alteration, and Reinforcement. (Look, I'm not super knowledgeable about the Nasuverse, If you would like to correct me, feel free)