SPEC: Birth

They're both about people with supernatral abilities.

Want more mind boggling series that gets you hooked on the first episode? SPEC is definitely your next drama to watch. If you like Toda in Liar Game, you'll love her in SPEC.

Both plots revolve around supernatural abilities.
Both star Kamiki Ryunosuke & Arimura Kasumi (minor roles in SPEC, leading roles in FE).

- Buddy Cop drama
- Both Male lead have the same motive of revenge and personality change
- Both shows have similar "aesthetic" and comedic timing (Invisible is a more serious show)
-Spec is more of a Human vs Mutant while Invisible is the usual Police vs Criminal drama

• Both feature supernatural investigation teams solving bizarre cases.
• Both series feature villains who want to become the most powerful being.
• some characters possess special abilities
•Both shows explore deeper lore, mixing mythological elements with government conspiracies

Investigation jdramas.
Set in departments that are looked down upon/essentially forgotten by the rest of the police.
— Aren't taken seriously, but are productive nonetheless.
Quirky chaotic female leads who annoy cold/rude male leads.
Both feature Ryu Raita in a supporting role.

Keizoku is apparently a parent story to SPEC though I see no direct correlation in story. SPEC leaned into supernatural abilities while Keizoku aimed to disprove and rationalize.

The humor is similar and they are both concerning detectives solving strange mysteries in sometimes strange ways. Also, there are random references to Keizoku SPEC all throughout the Ataru drama (in the background).

-Both are Tsutsumi Yukihiko works. Expect a lot of slapsticks, 60's-90's pop culture reference, amazing score, and unique cinematography.
-Yamegoku is basically Keizoku/SPEC, but without the element of weirdness.
-Both drama feature Kitamura Kazuki as a cop dressed and act like a Yakuza.

Both excellent crime/detective dramas that offer a serious alternative to the usual (k)drama. SPEC is offbeat and has light fantasy elements added.