23.5 (Novel)

23.5 องศาที่โลกเอียง (23.5: When the Earth Is Spinning Around) is the Thai Girls' Love novel by By Blue that GMMTV's 2024 series adapts. The official English edition runs 370 pages and is published by everY, the Girls' Love imprint of Jamsai.

Ongsa is a transfer student who has not found a way into her new school and has settled for watching it from the edge of the room. Sun is the classmate everyone gravitates towards, and has no idea she is being watched.

When Ongsa finally makes contact she does it from behind an anonymous account, under the name Earth. The account gives nothing away, Sun assumes Earth is a boy, and Ongsa lets the assumption stand rather than lose the first real conversation she has had in months. The novel is about how long that can hold and what it costs the person maintaining it.

The title is the tilt of the Earth's axis, 23.5 degrees, which is the angle that gives the planet its seasons. The book uses it for the small difference that changes everything about how two people orbit each other.