The Result of a Debilitatingly Shy Woman's Genderswap in Another World

From HaruPARTY:

Saitou Yoshiko was a boring 24-year old woman. She had always hated her job, but due to her debilitating shyness never spoke out, leading to a suffocating lifestyle. Then at home she suddenly reincarnated?! And into that no less! She had become a man!
Thus, Yoshiko, now named Altis, lives her life in this other world, her shyness causing a whole mess of misunderstandings, unable to rectify them...