Isso Koe ga Nakattara
From Hoshikuzuu Scans:Rokuse, a janitor who struggles with stuttering, meets Takashina. Takashina is a man who is able to skillfully present himself in front of large crowds of people earns him the admiration of Rokuse. While Rokuse nurses a growing love for Takashina, he stutters out a "Th-Th-Th-Th-Th-That's o-o-okay!" to Takashina's offer. What will you do with a top-notch employee and a stuttering janitor? Their story is bound to be rife with communication hurdles.
Hakidame no Tsuru wa Yogosa Retai
Thats the first time I've ever been called dirty... Say it again!!" A fetish boy's love between an average, clean-freak janitor and a complete masochist who wants to be defiled!
Kirei ni Shiteyo