Kodansha USA Licenses You Must Be This Tall to Propose!, Mobile Suit Gundam: Cucuruz Doan's Island, More Manga

Title: You Must Be This Tall to Propose! (Ōkiku Nattara Kekkon suru!)

Discovering that their cartoonish bodies make them supermen in the hyper-realistic parallel universe, the boys set out to rescue Futaba.

Nagi sneaks out the next morning, careful to not wake Yuu up, and vows to keep the incident a secret.