The official website for the TONIKAWA: Over The Moon For You anime has announced that the forthcoming OVA episode, titled Tonikaku Kawaii ~SNS~, will begin streaming overseas on August 18, 2021. It will be released on Blu-ray Disc in Japan on the same day. Crunchyroll previously announced that it would be streaming the OVA.
Crunchyroll describes the story of TONIKAWA: Over The Moon For You as:
Nasa Yuzaki falls in love at first sight after an encounter with the mysterious Tsukasa. When Nasa earnestly confesses his feelings, she replies, “I’ll date you, but only if we’re married.” Nasa and Tsukasa’s cute and precious newlywed life of love is about to begin.