Harry Potter: I Got Rich After Entering the Marauders' Era with a Game System

When the Galleons from Harry Potter: Magic Awakened became cash you could withdraw...

Nayam: Holy crap, I'm a rich woman now!

Sirius: Rich lady, please let me be your sugar baby!

Many years later, young and mischievous Lane sneaks into his dad's study and manages to uncover the mushy, flirtatious love letters the two exchanged back then:

"My dear Miss Wright, you are my light. You will be my devout faith for all my life."

Content warning: The female lead is unwell (from beginning to end, inside and out).

Cold-hearted deep down. She seems as steady as an old dog, but is actually cold and unfeeling (in the early chapters).

The female lead doesn't care about anything. It's not that she takes things as they come; she genuinely doesn't care about a thing.

Only later will she gradually be healed by love and friendship.

A growth-focused happy ending.

Also, I'll try to remember the bad-ending side plot I forgot back then, sob sob sob sob sob.

Theme: I want to know what it feels like to get rich overnight, too.