I, Kitahara Natsuhiro, have only one standard for love.

Big sister, I only like big sisters, mature and wealthy big sisters.

Conan: Your standard for love is very problematic! Yukiko is old, has three layers of tires, and the foundation on her face is as thick as a city wall. What do you like about her?

Kitahara: Big sister! And do you dare to say this in front of Yukiko?

Yukiko: Conan!!!

Ran: Mr. Kitahara, you can't be with Ms. Kisaki Eri. She and my dad are childhood sweethearts. They are a perfect match!

Kitahara: Ran, stay out of adult affairs! By the way, I'll tell you one more thing, childhood sweethearts can't beat those who fall from the sky. Kuroba

Toichi: Kitahara Natsuhiro, you are shameless, despicable, and not a good person. Give Chikage back to me!

Kitahara: You, a dead person, stay out of the affairs of the living. If you don't, I'll really nail your coffin shut!

Akai Shuichi: Ms. Mary...

Kitahara: Full marks!