Alexi Ivanov was a man of rugged countenance. He was also the man tasked with overseeing the Department of Mysteries.
At this point in time, he observed one Harry James Potter running through his hallways. He was accompanied by a freckled girl with flaming red hair and another with brown hair that, with his trained eyes, he realised was formerly bushy. It was plain to see that she had grown out of that.
Currently they were fleeing the minions of the self proclaimed 'Lord Voldemort'. Alexi normally wasn't meant to interfere with such things, but this was personal.
The Death Eaters pursuing these teenagers had amongst them Lucius Malfoy, Augustus Rookwood and Antonin Dolohov. The other Corpse Munchers (an actual thing that Voldemort's followers did to muggle victims) didn't matter; it was the aforementioned ones that had tortured and killed his wife and adopted son. They had been turned to inferi and he was forced burn their bodies, preventing a proper burial.
He figured, if there was a chance that he could help Harry Potter, he would give it a shot. Perhaps he could even gain a son in the process.
Upon Harry's reaching of the door to the Room of Fated Love, he made his move.
He used a spell to speak directly to Harry's mind: "Harry. You may not know me, but trust that I want to help you. The door ahead can only be opened by those who are meant to join by the will of magic itself. Even then, both parties must be pure of heart. The 'Eaters' will not be able to follow you. One of the girls is your fated. I can sense it."
Harry Potter was running for his life. Upon hearing a voice, Russian he absentmindedly noted, he made the immediate decision to listen. In this situation, he was guaranteed to die. At least if he followed these instructions, there was a chance of survival.
Doing so, he yelled, "Ginny, grab my hand!!" and went for the door. Though confused Ginny trusted Harry and followed his instructions.
It didn't work.
He released her hand and tried the same with Hermione. Once again, no success. Harry screamed in frustration, slamming on the door with his free hand. Hermione's hands was squeezing his, entranced in absolute terror. Despite the life or death situation they were in, Ginny concernedly laid a hand on her shoulder, intending to ask him what was wrong.
Yet, before she could ask him they tumbled through the door! They had landed in a heaped pile on the floor, the entrance vanishing entirely. No Death Eaters would be able to follow them now.
The last thing Harry saw before blacking out was a pair of blue eyes, which were broadcasting more power than dumbledore ever had even in his little finger, gazing at the three soon to be unconscious teenagers with a myriad of emotions. Surprise, worry and, oddly enough, wistful regret...