"Ryousuke is a prominent character in the Japanese manga ""I am the Male Lead’s Ex-Girlfriend"". He is a young man with strikingly green hair and a decisive personality. Ryousuke is shown to be a confident and determined individual, with strong opinions and a no-nonsense approach to life.

Ryousuke is introduced early on in the manga as the ex-boyfriend of the female lead, Yuna. Despite the fact that they are no longer together, Ryousuke still holds a deep affection for Yuna and is shown to be protective of her whenever he feels she is being mistreated. This protective streak often puts him at odds with the male lead, Kazuki, who is Yuna's current love interest.

Throughout the manga, Ryousuke is shown to be a skilled martial artist, using his training to defend himself and others when necessary. He is also an excellent strategist and is frequently called upon by Yuna and Kazuki to help them navigate various obstacles.

Despite his tough exterior, Ryousuke is also shown to have a soft side, particularly when it comes to Yuna. He often goes out of his way to help her, even putting his own safety at risk to ensure her well-being. This unwavering loyalty and devotion to Yuna is a defining trait of Ryousuke's character.

Overall, Ryousuke is an important character in ""I am the Male Lead’s Ex-Girlfriend"", providing both a source of conflict and a source of support for the other characters. His strong will, martial arts skills, and unwavering loyalty make him a fascinating and complex character to follow throughout the manga's storyline."