@Sibl
Ichika.
Ch 83 page 5 - Ichika confession she was the girl from 5 years ago.
https://mangadex.org/chapter/595924/5
Ch 85 page 14 - ichika's memories of that evening 5 years ago along with her memory of the day she realized Fuu was that boy in Kyoto during the test of courage.
https://mangadex.org/chapter/614118/14
Ch 86 page 10 - Flashbacks of all the special moments she shared with Fuu including the time she met Fuu in Kyoto in the top right diamond panels.
https://mangadex.org/chapter/619757/10