Takeru Sasazuka is a main character in the otome visual novel 'Collar x Malice.' He is a former police officer and a talented hacker who assists the protagonist in solving the mysterious X-Day incidents. Known for his sharp tongue and straightforward attitude, Takeru is highly intelligent and excels in data analysis. Despite his blunt demeanor, he deeply cares about justice and protecting others, especially those close to him. Throughout the story, Takeru plays a crucial role in uncovering vital information and supporting the team.