Oh, no it's fine. [He gives a sheepish smile.] I helped because I wanted to and not because I wanted something in return. [And because, as Hokage, he feels the need to help everyone he can.]

Although, I will take note of... Venusaur's capabilities should ever there be a need for them in the future. [Not because he'll take it as some sort of payment for what he did, rather as something that'll come in handy for anyone in the future.]