Big-hearted college student Kazumi can't seem to say no to anyone. He'll do whatever it takes to help people, even if it means going into debt.
Kazumi, Hikita and Mimi make a promise to never borrow money again. Kazumi must complete an impossible task if he wants zero interest on his loan.
Kazumi is forced to work two jobs just to pay the interest on his loan. Despite his promise, Hikita wants to borrow money so he can get married.
To pay his loan in full within the allotted time, Kazumi resorts to betting on horse racing. Shiraishi attempts to write a love letter to Sumire.
When Kazumi's mom makes a surprise visit, Kazumi does all he can to keep his debt a secret from her. Meanwhile, Shiraishi sets out to plan his date.
While living on the streets, Kazumi comes up with a genius business plan. Tensions arise between him and Shiraishi when he finds Shiraishi's father.
Omuomu makes an unexpected revelation during the employee welcome party at Kazumi's company. Hikita is given a task that will affect Kazumi's future.
Mimi, Hikita and Kazumi learn of Omuomu's tragic past. After Chaggy and Teruteru get fired, Kazumi hires them to help with his deliveries.
Kazumi takes on Omuomu one last time in a bid to prove that emotions are more important than money. Mimi wrestles with her feelings for Kazumi.