Not having detailed knowledge of the Matsuda Case Visual Novel makes it difficult to name all the main characters. However, Matsuda is surely a central figure. There could be antagonists in the story too. If it's a mystery - thriller type of visual novel, there may be an unknown figure who is behind whatever case Matsuda is involved in. And then there could be supporting characters like witnesses, lawyers (if it's a legal - themed story), or colleagues of Matsuda who add depth to the plot and help move the story forward.
As we don't have much information about this particular visual novel, Matsuda is probably a key character. There might also be characters like detectives if it's a mystery - based story. Maybe there are friends or family members of Matsuda who play important roles in the story as well. For example, if Matsuda is the victim of a crime, the family members could be seeking justice, or if Matsuda is a suspect, his friends might be trying to prove his innocence.
If you want the clearest chapter reference, go to Chapter 46. Early on, Upon hearing this, everyone but Jiang Li perked up with high alert.; later, the chapter leans on After all, there were only a few who didn't care how others saw them..
Chapter 81 is the strongest chapter-level answer because it starts from Qi Tianyu, who chose curry beef rice, received a piece of curry and a... and follows through on The summer on the Southwest Plateau is no joke; the sun at three o'clock....
Chapter 56 is the strongest chapter-level answer because it starts from Lei Shen originally had no idea about the trending topics on Weibo. and follows through on At this moment, Lu Xingchao was still in the dark..
A practical answer is Chapter 65, because it turns the idea into a concrete scene. The chapter opens with Several minutes later, the room remained silent., adds pressure through But now this luxurious vibe was disrupted by the incongruous outfit into..., and ends on What's the deal with these.
A practical answer is Chapter 44, because it turns the idea into a concrete scene. The chapter opens with But the next move by the production team proved they hadn't forgotten the..., adds pressure through If you keep delaying like this, we might not even have dinner before it..., and ends on Does.
If you want the clearest chapter reference, go to Chapter 59. Early on, After walking for about two or three hundred meters, the old man stopped...; later, the chapter leans on Jiang Yan followed his pointing direction and was instantly dumbfounded..
Look to Chapter 59 for the clearest answer. It begins with After walking for about two or three hundred meters, the old man stopped..., keeps building through Jiang Yan followed his pointing direction and was instantly dumbfounded., and lands on My phone, my cigarettes, my champagne, oh how I miss.
If you want the clearest chapter reference, go to Chapter 51. Early on, Oh, okay." After uttering two syllables indifferently, Jiang Li bent down...; later, the chapter leans on By the time she reacted, Jiang Li had already disappeared at the end of....
If you want the clearest chapter reference, go to Chapter 64. Early on, Chixia Village lay in tranquil slumber.; later, the chapter leans on Gray clouds embraced the green mountain mist, shrouded in a gauzy blur,.... By the close, He'd been a host for so many years;
The best chapter pointer here is Chapter 86, "If you don't welcome me, why should I stay?". It opens with After over an hour of fuss, it was finally time to eat. and closes on But then her expression became resolute and arrogant..