Dark Wizard: Rise! My undead army!

(The rating has just been released and will increase later.)
[Dark Wizard + Genius + Undead Side + Decisive and Ruthless + Dimensional Warfare + Slow Start]
Lynn, who is terminally ill, does not understand why she was thrown into this cruel alien world.
Mother Earth generously granted him the ability to record and analyze (Xiao Kai doesn't count as Kai).
But facing a disastrous start—falling into the clutches of the underworld and about to be sold into the "Nightingale Pavilion"—[the situation is dire].
Lynn decisively chose "If you can't beat them, join them!"
From then on, the "Bloody Hands Gang" gained another notorious member, "Abacus Snake".
I originally thought I could use the convenience provided by the gang to accumulate start-up capital.
But an unexpected turn of events disrupted his plans.
What? A wizard? Recruiting apprentices?
Great news! We can become noble mages too?
What the heck? A dark wizard?
Whatever! I'm no saint either!
And so, Lynn successfully joined the Bone Spire Academy and became a glorious dark wizard.
Who says there aren't good people in Dark Wizarding? The people here are absolutely amazing!
They were all incredibly kind. My roommates, classmates, and mentors all volunteered to become "materials" to help me achieve my dreams. It was truly touching!
Don't worry, I will definitely climb to the top of the world with your corpses!
Rise, my undead army!
Attack! Attack! Launch an attack on all the heavens and myriad realms!!!