A visitor
The headmistress of Hogwarts, Professor McGonagall is visiting Neville and Luna.
Neville frowned. "What have they done this time, Minerva?"
Professor McGonagall said, "Your sons are very troublesome, Mr. Longbottom."
Luna smiled. "I sense a but coming."
Professor McGonagall went on, "But I'm not here because they're in trouble again."
Neville gasped. "You're not?"
Luna asked, "Then why are you here?"
Professor McGonagall told them, "I'm here to congratulate you on raising two very prestigious wizards, Mr. and Mrs Longbottom."
Neville insisted, "Tell us why."
Professor McGonagall continued, "Your sons, Lorcan and Lysander have been excelling in every subject with ease. Not just that, they have also invented their very own line of potions."
Luna beamed, "I wonder where they learnt that?"
Neville smirked. "Definitely wasn't me that's for sure."
Professor McGonagall grinned. "I seem to remember Severus disliking your lack of skills, Mr. Longbottom."
Luna added, "Well, it wasn't me either. I was never that good at potions."
Professor McGonagall replied, "I think Mr. Potter taught them, Mrs Longbottom."
Neville inquired, "Harry?"
Professor McGonagall nodded and explained, "Horace still talks about Mr. Potter's skills in potions to this day. He seems to think your sons have the same skill."
Luna smirked. "But where did Harry learn so much about potions?"
Professor McGonagall said, "I heard from a book that once belonged to Severus himself."
Neville smiled. "Fancy that, our sons are potion masters."
Luna agreed, "They sure are."