Sekai de Ichiban Oppai ga Suki!

The ideal image of Chiaki Ichihara shines through her handsome looks and popularity as the girls' archery club captain, always impressing her classmates. However, behind her upstanding appearance, Chiaki hides an obsession with breasts! Seeing them is not enough for Chiaki; without getting a feel for them, she utterly fails to function normally.

Thankfully, Chiaki meets Hana Harumi, a student from a neighboring high school who agrees to satisfy Chiaki's desires, as she mistakes her request for a love confession. Hana's chest is a dream come true for Chiaki—its voluptuous size to admire, its flawless shape to try all sorts of things with, and its splendor is all for her to indulge in. Though their relationship gets off on the wrong foot, the two may find a budding romance beyond the bosom.

Sekai de Ichiban Oppai ga Suki! was published in English as Breasts Are My Favorite Things in the World! by Yen Press from June 23, 2020, to August 27, 2024.

The series was adapted into a two-part drama CD, which was bundled with the release of the third and fourth volumes of the manga on March 27, 2019, and December 27, 2019, respectively. The CDs feature two new stories by the original author.