Charissa Ong published her first English Poetry and Short Stories book in 2016. #MidnightMonologues is the finalist for the International Book Awards 2017 for both Best Cover Design and Poetry categories. It has also been MPH's Best Books of 2016. Her second book launched in 2018, Daylight Dialogues have also reached the Best-Sellers list.

Her books are now available nationwide in Malaysia, Singapore, and the Philippines, as well as on Amazon in audiobook, ebook, and paperback formats.

She has also released her boxset, Poethree O'Clock which comprises of the hardcover versions of Midnight Monologues, Daylight Dialogues, and an illustrated poem short story 'What Does Your Name Mean?'

Poetry and Short Stories - A Practice Book authored by Charissa launched in 2021, and hit the best sellers list and won the award for best cover design for 2022's International Impact Awards.

My Medicine is her third official poetry book which has also stayed in MPH's International English Fiction Best Sellers list for 25 weeks.

Pseudo-Immortals is her 7th book, but her first novel publishing in May 2025.