Matcha & Sesame base: In a food processor, pulse graham crackers, melted butter, sesame seeds, and matcha powder until finely ground. Press mixture onto the bottom of a 9-inch springform pan and bake for 12 minutes. Let cool completely.
Bourbon & Caramel filling: In a large bowl, using an electric mixer on low speed, beat cream cheese until smooth. Add sugar and beat until creamy. Beat in eggs, one at a time. Beat in heavy cream, bourbon, cornstarch, and vanilla until smooth. Pour mixture over the cooled crust. Drizzle caramel sauce over the top.
Bake for 45-50 minutes, or until the edges are set and the center is slightly jiggly. Remove from the oven and let cool to room temperature.
Fudge Brownie topping: In a small pot over medium-low heat, melt semisweet chocolate chips and unsalted butter, stirring frequently, until smooth. Remove from the heat and whisk in sugar. Whisk in eggs one at a time. Stir in flour and salt until combined. Pour brownie mixture over cooled cheesecake.
Refrigerate for at least 3 hours or overnight. Run a knife around the edge of the cheesecake and release sides of the springform pan. Cut into slices and serve.