The literature club's senpai always speaks too softly, so the kouhai tried to use a hearing aid. This might continue depending on its reception on Twitter, so you better follow and retweet if you want to see more!
My Senpai's Voice Is Too Soft so I Tried Wearing a Hearing Aid, It Unexpectedly Made Me Go to Heaven is a completed manga by Tanaka Doriru, first published in 2020. It blends romance and comedy. You can read all 1 available chapters of My Senpai's Voice Is Too Soft so I Tried Wearing a Hearing Aid, It Unexpectedly Made Me Go to Heaven online for free on MangaPulse; the newest is Chapter ?, added 2020-05-20. The series is finished, so you can read it from start to end in one go.