Kiss From Fuu?!

The eldest of the Ohkura sons came home and revealed Chisato's secret about doing everything for money. Everyone were disappointed of her and so she left the castle feeling quite bad. Her friends from the net cafe and park decided to help her earn the 100 million yen wherein in the contract it was said that if she couldn't fulfill her 10 motherly duties or ran off, she should pay it immediately. Finally they found a way and that is to dig an onsen. On the other hand, the Ohkura brothers found out what Chisato has been up to and decided to help... but what will happen if everything ends up with a kiss?