Dramatic irony-Tengo and Aomame being close to each other
Tengo and Aomame surpass each other on the playground observing the two moons several time before the climactic meeting at the end. The reader is aware of their closeness and near meetings, which creates tension and makes this a dramatic irony.
Situational irony-Aomame killing Tamotsu Fukada
Being assigned by the dowager to assassinate the cult leader Fukada, who they discovered violated various young girls, Aomame is met with a surprising revelation. Not only is there a strange, inexplicable aura surrounding the leader, but he is aware of the truth why she came there. Fukada knows that Aomame came to kill him, he even welcomes it which is an unexpected turn of events and makes this a situational irony.
Situational irony-Air Chrysalis describing real events
The writer of the book Air Chrysalis, Fuka-Eri was a part of the cult under the leadership of her father. Fuka-Eri describes fantastic, fairy-tale-like events in the book which turn out to be depictions of real events that took place. Air Chrysalis is introduced as a fantastic fiction by a peculiar girl, but then, unexpectedly becomes reality which makes this a situational irony.
Situational irony-Aomame being a hired assassin
The novel begins with Aomame hurrying to a work assignment, which requires her to look polished and professional. She takes a shortcut with an underground subway to make it on time. The fact that she is a hired assassin on a mission to kill a rich businessman remains hidden until the very moment of the act, which is an unexpected turn of events and makes this a situational irony.