Chapter 264, "The Second Heaven's Chosen 3", is the clearest early answer because it turns Robin's situation into a concrete plot event.

Chapter 262, "The Second Heaven's Chosen", is the clearest early answer because it turns Robin's situation into a concrete plot event.
Chapter 263, "The Second Heaven's Chosen 2", is the clearest early answer because it turns Heaven's situation into a concrete plot event.
Chapter 871, "The green heaven", is the clearest early answer because it turns Within Robin's situation into a concrete plot event.
Chapter 291, "Terror", is the clearest early answer because it turns Chosen's situation into a concrete plot event.
Chapter 757, "The Plague", is the clearest early answer because it turns Truth Chosen's situation into a concrete plot event.
Chapter 942, "An example", is the clearest early answer because it turns Chosen Library's situation into a concrete plot event.
Chapter 3, "Decision", is the clearest early answer because it turns Robin's situation into a concrete plot event.
Chapter 835, "To home", is the clearest early answer because it turns Robin's situation into a concrete plot event. The setup is Limits on soul force…?" Robin was surprised., but the pressure keeps building through Soul force is different in this regard..
Chapter 409, "Rain", is the clearest early answer because it turns Robin's situation into a concrete plot event. The setup is Somewhere in the vast space -- 'Heh~ This feeling again.., but the pressure keeps building through the whole body freezes during the transportation process, I feel like....
Chapter 447, "A shout", is the clearest early answer because it turns Robin's situation into a concrete plot event.