Chris Yamada acts as both older brother and editor to Elf Yamada at Full Drive Bunko. His past is marked by family turmoil after their father's death, leading to their mother's excessive strictness. Unable to endure this, Chris left home young. His departure shifted their mother's full expectations onto Elf, leaving Chris with lasting guilt and a profound sense of responsibility toward his sister. This drives his efforts to support her career and personal happiness, including permitting her to adopt his surname "Yamada" despite their complex family history. In appearance, Chris possesses long blonde hair and distinctive purple-brown eyes. He consistently dresses in formal suits, typically white or black. His striking, tall frame and elf-like features are noted as more pronounced than his sister's, aligning with classic fantasy depictions of elves. Professionally, Chris exhibits a serious and strict demeanor, particularly regarding Elf's tendency to miss work deadlines. He employs forceful methods when necessary, such as confining her to complete manuscripts—his termed "iron fist punishment." This stern approach stems from underlying concern for Elf’s well-being. He acknowledges her strengths and flaws as an author and prioritizes her happiness, partly to atone for leaving her during their difficult childhood. This complex dynamic mirrors his strained relationship with their mother, reflecting unresolved family tensions. His interactions include a notable misunderstanding where social media rumors led him to mistakenly believe Masamune Izumi was Elf’s boyfriend. Additional personal details confirm his AB blood type.