Ryukishi07 (竜騎士07, Ryūkishi Zero Nana?, born November 19, 1973) is the pen name of a Japanese man originally from Chiba Prefecture who is well-known as the original creator for the idea of the visual novel series Higurashi no Naku Koro ni and Umineko no Naku Koro ni. He is the representative member of the group 07th Expansion. His pen name originated from the Final Fantasy series, "Ryūkishi" being the Japanese term for "Dragoon", and "07" goroawase for the name "Lenna". His illustration style is recognizable from the large hands he draws on people.
The Kizuna manga is a loose adaptation of the Advanced Story from the Console Arcs--it provides the readers with the basic information on the characters, including their motivations and relationships, but not much beyond it. By taking bits from separate arcs, it tries to form a cohesive story, which unfortunately doesn't work as greatly as it was supposed to.
For example, Console Arcs offer a greater chunk of information on Minai sisters' backstory; explores Chisato's dilemma on her feelings towards Akira and her desire to make Natsumi happy as well as the latter's role in her life; gives a longer time period needed for Tomoe and Natsumi to bond as "sisters"; closes the mystery behind the murder of Minai's parents; builds a solid connection to the original plot of Higurashi and expands the characterization of some of the OG cast and does much, much more.
Natsumi's storyline in Kizuna works fine but doesn't provide loop accumulation from the previous iterations that helped her to overcome inner demons (like it was in OG arcs). Whereas, Tomoe merely exist as a tool to help Natsumi and doesn't have much progression on her own. It's sad because I really like her character. Which is why I strongly recommend checking the Console Arcs for the bigger picture.