Okay, let's get this out of the way first: Shinrei Tantei Yakumo's other manga adaptation had a hotter Saito Yakumo. But that doesn't diminish the enjoyment factor of this manga adaptation of the popular light novel series' Volume I. Whatever was traded in Yakumo's looks department was compensated by his mellower, kinder persona in this particular manga work. He didn't become a saint overnight, certainly, but the mangaka added a few touches here and there that softened his crass & sass personality a bit (ex. the scene when he lent out a coat to Haruka isn't in the actual novel, but the mangaka made the scenefeel organic and seamless in transitioning back to the actual novel events)

Haruka is surprisingly less annoying in this adaptation. She certainly felt more mature, not easily taking Yakumo's mood baits. Across all STY media, I think I liked her best here.

tl; dr: great read, even if you've already read the other manga adaptation or read the light novel-- especially if you're a Haruka x Yakumo shipper like me! :)