He rose and carefully prepared for his day. Fortunately, the duties for his true persona were few, and he could afford to take a couple years off. His territory was clearly marked, and there were none left who were strong enough to challenge him over it.
It had been while he'd been exploring the mysterious lands beyond the borders of his territory a century ago that he'd met the man who had given him the idea that had led to his current routine. The gist of what the man had told him was thus: some points in time were fixed, and some were changeable. The fixed points themselves were somewhat malleable as well. As long as certain things happened, the rest could be changed if one was careful about how one did so. The odd smelling man who was neither human, youkai, or any of the odd races similar to the youkai that he'd encountered in his travels had used odd phrases such as "Wibbly-wobbly timey-wimey stuff" while giving his explanation, but he'd been able to follow. Somewhat.
It had been for this reason that he'd adopted the persona of one of his brother's beloved's classmates. He had felt absolutely no regret in killing the boy in order to do so considering what the real owner of the face he was currently wearing had done to the girl after she'd refused his advances one too many times in the original timeline.
The real owner of the face he wore was of the sort that everyone would have said "But, he was so sweet and kind." about after the bodies were discovered.
After dressing and getting ready for school, he said goodbye to his "mother" who was still puzzled over the fact that she'd never received a call about her son's tardiness despite how late he always left, and raced out the door. A couple minutes later, he was at the Middle School that he and Kagome attended.
He ignored the admiring glances from the other females who attended the school. While he didn't outright hate humans, he wasn't sexually attracted to them either. Most of the human race could go and hang themselves for all he cared, but there were a few here and there that he cared for far more than the rest, and his brother's beloved was one of them.
He smiled with that sickeningly sweet smile that made him slightly ill since he knew exactly what had lain behind the mask of the original owner of that smile as he proffered one of his usual "gifts" and got a weak and embarrassed "Thanks Hojo" in return.
As he moved to his seat to await the start of class, he smiled a smile that was a bit more genuine as far as he was concerned, ignoring the suspicious narrowing of one of Kagome's friends' eyes. They could think what they would. Harming his brother's miko was not a part of his plans.
They say that one gets more sentimental in their old age. That was the only reason Sesshomaru could think of why he was helping the brother he had despised for being the cause of their father's death. As far as he was concerned, the tragedy that had left his brother Inuyasha dead five-hundred years in the past would not be occurring. The miko would live. The miko would live and await the day of what would be her high school graduation, the day the well would open once more, and his brother would find her alive and healthy rather than in a grave after her having committed suicide months after the closing of the well.