宛城、炎上！！ (Wancheng, Engulfed in Flames!) is a hardcore track by Cranky (Hiroshi Watanabe) featuring the MC and producer おもしろ三国志 (Omoshiro Sangokushi), who wrote the lyrics and performed the vocals. Originally composed for CHUNITHM PLUS, the song was ported to maimai でらっくす Splash at that version's launch on September 17, 2020, under the オンゲキ＆CHUNITHM crossover category. The track dramatizes the historical Battle of Wancheng (197 AD), in which the warlord Cao Cao's forces were ambushed by the formerly surrendered Zhang Xiu, costing Cao Cao his son Cao Ang and his famed bodyguard Dian Wei. The lyrics unfold as a theatrical monologue from Cao Cao's perspective: opening with overconfident boasts about conquering the realm, snapping to panic at the cry of "敵襲！！" (Enemy attack!), and escalating into a desperate shouting match as flames consume the city. The vocal delivery shifts from a measured rap flow to full-throated screams, mirroring the collapse of Cao Cao's composure. Musically, this was Cranky's first hardcore-style composition, pairing aggressive synth basslines with rapid drum programming and accents of traditional Chinese percussion. The BPM begins at 175 and surges to 260 during the climactic final section, mirroring the narrative's mounting chaos. The jacket art, credited to TKG-SOUSOU, depicts a character consistent with the song's dramatic, stage-like presentation. The MASTER chart, designed by 小鳥遊さん (Takanashi-san), was originally assigned level 14 at the Splash launch before being revised to 13+ from Splash PLUS onward. It is known for an asymmetric patterning section (combos 701–811) recalling the structure of My My My, and a punishing BPM-260 finale that combines 32nd-note trills with rapid Slide note sequences. The EXPERT chart was designed by サファ太 (Safata).