Heart City Stories Ep. 2: Office Rivals - Ch.4 v0.4.04 by ParkGDev - Adult Sex Game

You and your co-worker Nanako have always had a bitter rivalry. Finally, on the order of your boss, you two have to cooperate for once. What bottled up feelings will this predicament reveal? Will it reignite your long-lost feelings for Nanako? Where did it all go wrong between you and her? And how will she eventually help you to reconnect what you've lost in touch with: that there is more to life than just being a productive workaholic?