Witches or Wizards who studied arithmancy knows the seven is the magically strongest number.
Voldemort tried to make seven Horcruxes, so he could become immortal and strongest but he didn't fully know the consequence of the process.
The process of making a Horcrux actually splits apart a soul piece each representing a single sin like - wrath, gluttony, lust, envy and so on.
In this story, we see that when Voldemort tried killing little Harry, his unstable soul shard that represents lust latched onto Harry's scar. Due to Lily Potter, Harry's mother's sacrifice, the soul shard couldn't influence Harry's soul. But as time passed by, his mother's protection waned a bit which provided the opportunity for Voldemort's soul shard to take control of Harry. But it didn't go as expected.
The moment he tried to possess Harry, the fierce protection fueled by his mother's sacrifice kicked in striping off the soul shard Voldemort's individuality until it was just a piece of soul that represents lust and contains all the knowledge of Voldemort. At the same time, the power of Harry's mother's protection decreased significantly. The new soul shard bypassed through the remaining weak protection and fused with Harry's soul. This resulted in a new Harry, one who had the knowledge of all magic that the dark lord knew. But the major change was his lust for women. He could be considered a creature of lust (not literally).
~Ssstupid hairless apes!! Staring at me all day!!! ~
Harry heard someone's voice which sounded more like hissing. But before he could find the source of the sound, he was assaulted by a terrible headache.
"Argh," He groaned painfully, clutching his head as he fell on the ground.
"Mom! something happened to the freak!" Dudley shouted. Petunia rushed toward them followed by trudging Vernon.
Some other people in the zoo, who were in the vicinity of Harry also rushed toward them.
"Quick! someone call an ambulance!" shouted a person in the crowd.
But nobody noticed the 'N' shaped scar on Harry's forehead gradually diminishing.
In the hospital...
"Mmm," Harry moaned as he slowly regained his consciousness. He sat up slowly on the bed. His mind was still disoriented from the earlier incident.
"So, you woke up? huh! let me check your temperature," He turned his head toward the source of the female voice. It was a woman dressed in a blue tunic and dark pants. Her body was almost like an hourglass, with her hips of the same size as her broad shoulders. She had a large bust and a nice butt.
Harry had a boner looking at the sexy lady in front of him. The nurse noticed the bulge on Harry's pants. But she didn't react. She was used to patient lusting over her body. But a teenager having a boner just by seeing her normal attire was a little abnormal. But she didn't ponder on it that much.
"Looks like you don't have a fever any more." The nurse's voice snapped him out of his trance as he realised that he was lusting over a woman's body who was twice his age.
'Why do I-I feel weird? Whose memories are this? Magic is real?! There is a whole community of magical people?! You can influence people's mind with legilimency?!' Countless questions formed in Harry's mind as there was an influx of foreign knowledge.
"Argh," He grunted with pain as he rubbed his forehead.
"What happened?!" The nurse rushed to Harry.
"Let me have a look," She said as she leaned toward Harry to check the faint scar on Harry's forehead.
The headache slowly decreased as the absorption of Voldemort's knowledge was finished.
While the nurse was tracing the faint scar on his forehead with her willowy fingers, his eyes fell on the cleavage of her breast. He couldn't control his lust anymore.
'Maybe I should use compulsion.' He thought of using the knowledge he gained from the memories
"Mam," Harry called as her pale blue eyes fall into his vivid green eyes.
"Yes?" She looked at him questioningly but her gaze turned blank he used compulsion.
"It's very hot here, isn't it?" Harry suggested.
"Yes," she answered in a monotone.
'Success!' Harry mentally cheered.
"It's uncomfortable with all the clothes. I think you should strip down to your underwear."
"Yes, I think so too," she said as she started undressing. She first took off her tunic top to reveal her plump breast with only the nipple hidden under the thin bra.
She then bent down a little to take her pants off. She unbuttoned her pants as she slowly slid down the pants through her slender legs. She stood up as Harry's eyes fell on her g-string.
'She looks just like a model with a perfect body!' Harry exclaimed internally as he licked his lips.
"Mam, why don't you come and sit on my bed? It must be tiring to stand all the time."
She nodded and sat down. Harry moved closer to her. He increased the compulsion.
"It's your duty to take care patient's needs, isn't it?"
"Yes," She replied, now completely under his control.
He gave her breast a gentle squeeze as she moaned softly. He kept squeezing as more audible moans escaped from her mouth.
"You are a dirty nurse, aren't you?" Harry asked while playing with her breast. His fingers circled around her nipple in a spiral fashion as it closer and closer. He then twisted the nipple through the thin fabric of the bra as she made a loud whimpering noise.
"You are a slut, aren't you? Wearing lewd clothes."
"I-I... Ahh!" He twisted her nipples in opposite direction.
"What?! I didn't hear you!"
"Yes, yes. I am a slut, I am a slut... Ahh," She cried as Harry pinched her nipples very hard.
"Who do you belong to?"
"Y-you s-sir... Ahh," He pulled her nipples mercilessly.
"Say it properly!" He said in a commanding voice.
"I be-belong to you, sir," She said with teary eyes.
"Good girl," He slapped her breast softly.
He then slowly caressed her hairs but suddenly pulled her head down to his crouch.
"Suck my dick like a good little slut you are!" He again commanded.
He unzipped his pants while her head bent down to his crouch. She then took out his five-inch dick. He didn't give her any time to look at it as he pushed her head down with his dick invading her mouth. He then kept pushing and pulling her head with any regards to her well-being.
"Mmm," "mmm," She was struggling to breathe properly.
"I am cumming... Drink all of it." Harry said as he released his semen inside her mouth. He let go of her head as she coughed while swallowing the cum. Her face still had the blank look. She was under Harry's control.
"You should dress up." Harry ordered. Harry also put his limp penis inside his pants.
After that she was dressed up. He broke the compulsion he had on her and also obliviated her. Her facial expression changed from blank to that of a confusion and a look of disgust as she coughed. She still had the bitter taste of cum in her mouth.
"What happened, mam?" Harry asked innocently.
"No-nothing. I-I have to go." Nurse said as she left the room.
'Soon, I will receive my Hogwarts' letter. It will be fun to play with all the witches!' Harry smirked.