I'm a High School Senior—What the Hell Is This Incubus Development System?

[Urban Fantasy]+[System]+[Academic Ace]+[Sports]+[Lighthearted Power Fantasy]

With 100 days left in his senior year, Cheng Che binds to the [Incubus Development System].

[Current Stamina: 48 (Out of breath after two steps. A disgrace to all incubi.)]
[Current Endurance: 43 (Needs three breaks to run 800 meters. The worst of the worst.)]
[Current Charm: 47 (The Demon King would take one look and revoke your citizenship.)]
[Current Intelligence: 51 (How are you any different from a slime?)]
[Overall Assessment: A once-in-a-century embarrassment.]

Cheng Che stares at the string of evaluations in silence.

Then flies into a rage!

Aren't incubi supposed to captivate everyone and grow stronger by draining people's vital essence? Why do the system's daily quests look like this?

Jog five kilometers (Stamina +1, Endurance +1)
Study diligently for five hours (Intelligence +1)
Follow a skincare routine and go to bed early (Charm +1)

And so Cheng Che begins his long journey of incubus development.

Stamina exceeds 60. Unlocked: [Tireless Stride].
Intelligence exceeds 60. Unlocked: [Total Concentration].
Charm exceeds 60. Unlocked: [Center of Attention].

One semester later, [Dazzling Youth], [Star of the Court]... a whole host of talents have been unlocked!

Everyone thinks he's just a lucky loser-until he produces his college entrance exam results: 732 points and the top score, casually proving a sixty-year-old mathematical conjecture along the way.

Everyone thinks he's just an academic ace devoted to research-until he wins the Australian Open and sets his sights on Wimbledon, his serves flying like bullets.

Everyone thinks he's merely branching out into sports-until a single unretouched photo of him goes viral, girlfriend fans across the internet scream, and ultra-luxury endorsement deals pour in faster than he can sign them.

From bottom-tier incubus to King of the Incubi, Cheng Che declares, "Sorry, but being an incubus means being good at everything."