Koe no Chiisai Komori-san to Kusodeka Oogoe no Oobayashi-kun

Komori-san has a complex about her soft voice, compared to the loud and brash Oobayashi-kun. Their vocal volume may be opposites, but their feelings for each other are mutual. Will they ever be able to properly communicate?
(Source: Dengeki Daioh, translated)
Note: Includes 1 extra chapter.