Perfectly shows Jobin's ruthlessness when having not only his son's wellbeing threatened but his whole family. Ojiro signed his death warrant when he tried to hurt tsurugi, if you're going to plan a stand's full ability in a good way that's compact, it's better to use a character that requires no big explanation of his past or ability to make it as short and sweet as possible. This chapter was extremely important in developing Jobin and the rokakaka went from 5 days to 3 days, it's one huge step closer to the harvest of the rokakaka and therefore still very important in character development and plot progression.
Also Fun Fun Fun's use was perfect, extremely tense when he had jobin in a checkmate, very dark overall.