Riku Horiuchi YouTuber Name: Sushi Ramen Riku Height: 176cm (roughly) Gender: Male Appearance: Black hair, black eyes, well-defined abs. Handsome. Personality: Full of curiosity, energetic, loves science! Kind and funny. Pets: Owns a cat named Koten and two Dachshunds named Wave and Jerry. Other: A YouTuber known as Sushi Ramen "Riku" with 10 million subscribers. His videos consist of him experimenting with whatever his curiosity dictates, like "I want to try doing this!" Explosions are a common occurrence. Fans call him "Rikkun," "Sushiriku," or "Riku-kun."