Mash-Up Anime: Teenage Assassin Enrollment. - Chapter 9 - Rizzing up the Quintuplet

The MC (Minato) is a college student who died in a plane crash and was reincarnated in a fantasy world. He was raised alone in the wilderness by his succubus mother, and now he tries to make his way as an adventurer.

Hakuto's life changes forever when his father Shin— a man with highly questionable morals—marries Kagura Kurotsuki, the CEO of a multinational company, and they move into her luxurious mansion.There, he meets the alluring daughters of his new stepmother: the seductive Yuzu—who doesn't hesitate to tease both her new stepbrother and her stepfather in ways that are... rather bold—and Rika, more introverted and irritable, yet just as sensual.But nothing is truly as it seems...Kagura is a succubus, but Rika and Yuzu are different.They were born from a demon and a vampire—something that shouldn’t be exsiste.Because of that, demons, vampires, even humans want them.But Hakuto won’t allow it.He’ll never let anyone hurt his beloved stepsisters.

They love gold, and they love silver. Even more so, they love gems that dazzle, like stars across the skies.
Firearms, jewelleries, and precious metals; A collector’s world will not be complete without antiques.
Storage auctions, old goods trade, re-estate sales and gold-digging. But the truth is, if one wants to make money, then the supreme way is through searching for the legendary treasures.
Holding the fort, there’s an ocelot, a wolf, and an Andes condor. At the side, there’s a loyal hound, an irascible ape, and an African honey badger. Who said that you can only rely on humans when treasure hunting?!

- Description from Novelupdates

Because of an accident, Max transmigrated to the Lous Land and became a newborn red dragon.

He could’ve just grown up and matured normally, and he would already be at the top of the food chain, but then he obtained the Discipline Makes You Stronger System.

“Congratulations to the host for completing 20 push-ups daily and persisting for one week, bonus reward Red Dragon Physique +100.”

“Congratulations to the host for completing daily swims in the lava and persisting for one week, bonus reward Dragon Breath damage x10.”

“Congratulations to the host for kidnapping one princess a day and persisting for one week, bonus reward Never-falling Golden Gun.”

“Cough, excuse me System, I’m a Dragon, I’m fine without this reward!” Max said hurriedly. Many years later, the name of Max the Red Dragon echoed through the multiverse. Only the mother dragon standing beside tilted her head and said with a puzzled face, “What, what in the world did I give birth to?”