Awwwwwwwww, ... Honoka doesn't mind if Kosuke's "date plan" went awry, is willing to have 'sexy time', both in the car as well as outside of it, and says in her own way that she finds him cute and charming.
"Hey {insert name} ... what does the scouter say about her "Potential Waifu Power" level?"
"It's ..... IT'S OVER NINE THOUSANDDDDDDDDDD!!!!!!!!!!"
You Know What Needs To Be Done Sooner Or Later, Kosuke-kun (you Lucky Bastard). Do Not Resist - It Is Your Destiny!
Ah, a lovely, Vanilla filled date plan. The best kind.
She's such a nice girl though, despite the plans being ruined, she still appreciated the sincerity and effort he had put into planning it.