Heartstopper · S3 E3Sleuthed by @shelfsleuth
Heartstopper · S3 E3 · Isaac Henderson · First school assembly of the year
Isaac's assembly read: This Is How You Lose the Time War
Amal El-Mohtar and Max Gladstone's 2019 novella is a love story told in letters between two agents on opposite sides of a war across time. It won the Hugo. Two people falling for each other through texts is also the plot of Heartstopper season one, just with more time travel.
Sources: All the books Isaac reads in Heartstopper, season three, Meeghan reads · Every book that Isaac reads in Heartstopper, Kobo · Isaac's reading list in Heartstopper season 3, Nose in a Book · Every Book Isaac Reads in Heartstopper Season 3, Den of Geek · A Complete Heartstopper Book List, The Geeky Waffle