Alexi was walking on the second floor of Hogwarts because there was some business that he had to do with the History of Magic Professor, whom he had yet to meet. Since Alexi was particularly new on the staff of Hogwarts, he felt that he should introduce himself to the many professors that taught at Hogwarts. Besides, after hearing about how many students got into trouble, Alexi would get to know the professors very well since they would single handedly be bringing the injured students into the infirmary. Hopefully, the History of Magic professor didn't change since two years back, when Alexi had graduated. He was on good terms with the professor, though the professor was most likely to have either quit or have gotten fired since he wasn't the best person to stick to the curriculum.
The meeting that Alexi had 'set up' with the History of Magic professor was kind of impromptu, meaning the professor didn't even know that Alexi was dropping a visit. To be quite honest, Alexi didn't even know if the professor was teaching a class, or even in his classroom. As he thought this, Alexi decided maybe he shouldn't bother the professor who could be busy with a surprise visit, and rather, set up a more formal meeting. Alexi stopped to think about this, right in front of the bathroom that was supposed to be off limits. Alexi took a peek into the bathroom, which he had never gone into before. As a student, he knew he wasn't allowed and he would do nothing that could possibly jeopardize his chances of becoming a healer, via getting kicked out of Hogwarts. But now, since Alexi was a staff member, he could go anywhere he wanted, even the Forbidden Forest at his own risk.
Alexi slowly opened the bathroom door, and to his surprise, saw a slightly younger male. Surely, the male was a student, and he surely wasn't allowed to be in the bathroom, unless they created a permit in the two years that Alexi had graduated from Hogwarts. "Hey," said Alexi calmly, trying not to sound intimidating. "What are you doing here?" Alexi stopped in his tracks, and left a metre of space between the two males.