Choice C is the best answer. Akira "came directly, breaking all tradition," (line 1,"Akira... tradition") when he approached Chie and asked to marry her daughter, and he "ask[ed] directly," without "a go-between" (line 65,"I... time") or "mediation," because doing otherwise would have taken too much time.
Choices A, B, and D are incorrect because in these contexts, "directly" does not mean in a frank, confident, or precise manner.