Jin and Taiga be like: IDGAFFF
But also
Jin → works tirelessly behind the scene to find clues to break MC's curse and whatever shady things Darkwick/Institute do (by making Tohma does the hard labour but eh, details!)
Taiga → risks his life to keep everyone safe (probably while using his stigma too even though it messes with his head), constantly worries about Romeo一were dejected when Romeo choose to trust Hyde instead of heeding his warning
If Jin and Taiga are truly the unfeeling bastard they present themselves as, Tohma wouldn't claim that Jin is "too kind for his own good" and Romeo wouldn't have been so desperate to find a cure to help Taiga.
Also interesting that both Jin and Taiga are said to be the epitome of charismatic leaders before whatever happened during the Clash pushed them to become how they are now.
On a bit of unrelated note, I feel like Jin, Taiga, and Edward are like a kind of "deus ex machina" presence in the overall Tokyo Debunker narrative in the way that those three always managed to solve the seemingly impossible situation "easily" and know more than they let on. For Taiga, it's now confirmed that it's thanks to his foresight but the other two seems like they just knows. It's the biggest gripe I have about those particular three so far but I'll choose to have more faith in the writers. Still, I also wish that in future updates the writers will show us more of their POVs instead of just showing us how OP they are. Less aura farming and more thoughts, opinions, and desires, please!