Kuchibiru no Yukue

Yuusuke and Souji have been friends since middle school and are now even working at the same company. But Yuusuke has been avoiding Souji and avoiding confronting his feelings for Souji ever since Souji suddenly got married. One day Yuusuke discovers his and Souji's kouhai Masahito has joined the company as well. Why did Masahito decide to join the same company? And what happens when Yuusuke learns the real reason behind Souji's marriage…?