It's hard to say for sure. Both Joseph Joestar and Straizo have their unique skills and strengths in the manga.
Chapter 318, "I Shouldn't Have Given Birth to You in the First Place!", is the clearest early answer because it turns Holy Heart Hospital's situation into a concrete plot event. Early on, Jiang Cheng glanced at the pink and white building from the bus..
Chapter 335, "You would be incredibly fortunate if you could get connected with the merchant family!", is the clearest early answer because it turns Pavilion's situation into a concrete plot event. It opens with Zhang, you're overestimating the matter." "Alright then, come in with...
Chapter 94, "Finally, Someone Comes to Calculate Affection!", is the clearest early answer because it turns Jiang Lake's situation into a concrete plot event. It opens with Jiang Li really has some skills, being able to figure that out." "Can... and closes on Brother is going to dress you up;
Chapter 112, "The Strange "Team Spirit" Appears", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with These five people are supposed to be at odds.
Chapter 196, "I am the one with the most potential!", is the clearest early answer because it turns Director Sun's situation into a concrete plot event.
Chapter 478, "Someone Comes to Bully Me?", is the clearest early answer because it turns Brother Pig's situation into a concrete plot event. The chapter turns that into something concrete by moving from However, before Jiang Yan's axe could descend, he heard a rustling...
Chapter 377, "Master Above, Please Accept Your Disciple's Bow", is the clearest early answer because a shaky connection becomes usable in the plot. Early on, Tell me what it is that you came to ask of me this time?" After....
Chapter 343, "Rounds of Bone Tempering, 1000-Strand Bone Burning in the Visible Yang Realm (Part 3)", is the clearest early answer because Great Xia finally turns buildup into a real advancement. Early on, Above the entire Star-picking Hall, it was as if a nuclear explosion.... By the end, Since my bones are fine, it proves that above Jade Bone, there really....
Chapter 82, "Jiang Yan and the Chicken Go Viral!", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Jiang Li gave her a fleeting glance.
Chapter 345, "Mirror Valley Defense Commander Luo Ming, Beast Tide, Great Xia's 6 Armies (Part 2)", is the clearest early answer because it turns Luo Ming's situation into a concrete plot event. The setup is Last June, Luo Ming led his team in Arrow Bamboo Forest to..., but the pressure keeps building through It was the third type of Advanced Cold Beast they had hunted, so....