蛇沢課長のＭ嬢

The story follows the sweat, tears, and scornful stares of the ordinary office lady Minako. Her boss Hebisawa, who seems like a super elite yuppie, actually has a masochism fetish! And he's latched onto Minako as his dominatrix! (Source: Shogakukan, translated) Note: Includes 4 extra chapters.