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Naehiro is when Chihiro and Makoto get all sappy and cute on the ship, making everyone else gag and wish they were dead
Chihiro: 'I’m so glad I met you, Makoto.' Makoto: 'Same here, Chihiro.' Everyone else: 'I wish I was a bean.'
In the middle of a murder trial, Chihiro and Makoto start holding hands. The judge yells, 'What is this nonsense?'
During the final battle, Makoto forgets to fight because Chihiro smiled at him.