Rintarō Suna, middle blocker for Inarizaki High School (Jersey #10) during his second year, originates from Aichi Prefecture but was scouted to Hyōgo's Inarizaki. Standing 185.7 cm pre-timeskip and 190 cm post-timeskip, he compensates for being slightly shorter than average for his position with technical skill. His appearance features dark brown hair parted in the middle, narrow grayish-yellow eyes, thin eyebrows, and a consistently neutral or bored expression; post-timeskip, his physique becomes more muscular. Personality-wise, Suna maintains a calm, deadpan demeanor laced with sarcasm, frequently voicing internal snarky remarks about teammates or opponents like Tsukishima and Tanaka. He is observant and analytical, deducing opponents' strategies—such as identifying Tsukishima baiting him into cross-court spikes. He tends to relax during matches with a significant lead but stays vigilant under Captain Kita's scrutiny. Off-court, subtle humor surfaces, like photographing the Miya twins' arguments for social media, though he later regrets engaging online. He speaks with a non-Kansai dialect distinct from his teammates. Suna's volleyball skills emphasize defensive intelligence and offensive innovation. His signature "Wide-Range Spike" involves rotating his entire torso mid-air to widen spiking angles, manipulating blockers and evading blocks. Combined with sharp game sense, this technique makes him one of Inarizaki's top scorers alongside ace Aran. Defensively, he adapts quickly to opponents' rhythms, reacting near-instantly to shut down spikes, like countering Kageyama's sets to Tanaka. In the Spring Nationals match against Karasuno, he consistently scored without being stuffed once, though Tsukishima and Hinata eventually received one spike through coordination. Pre-timeskip statistics rate his jumping, stamina, and speed at 4/5, power at 2/5; post-timeskip skills show spikes at 10/10 and blocks at 8/10. Post-high school, Suna transitions to V. League Division 1 team EJP Raijin, playing alongside Washio and Komori Motoya, and joins the Japan Men's National Volleyball Team. In 2022, he participates in an All-Star match, reacting with detached amusement to conflicts between former rivals like Atsumu Miya and Oikawa. Relationships include cautious respect for Captain Kita, whom he avoids provoking due to strict oversight. He maintains distance from the Miya twins' quarrels but occasionally records their fights. His interactions with Tsukishima involve mutual analysis and taunting, culminating in a post-match handshake. Personal trivia: Birthday January 25 (Aquarius), prefers Chūpet jelly snacks, has one younger sister. His name derives from the Tibetan sand fox.