Blackwell, Justice. Jesus Valentin Guerrero was tried by a Toombs County jury and convicted of murder and other crimes in connection with the fatal shooting of Shiann Nicole Cray. Guerrero appeals, claiming that the trial court erred when it refused to charge the jury on justification. Upon our review of the record and briefs, we see no reversible error and affirm.[1] 1. Viewed in the light most favorable to the verdict, the evidence shows that on the evening of May 4, 2016, police officers were dispatched to Cray’s home in Santa Claus, a town just south of Lyons in Toombs County. Cray reported that Guerrero, her boyfriend, had threatened to kill her if she broke up with him. The next day, Guerrero shot and killed Cray in her home (and with her own gun) while her two children—ages two and four—were present. Guerrero left the scene in Cray’s car, leaving the children alone in the house with their mother’s body, although he thereafter asked a friend to check on the children and retrieve (and destroy) Cray’s cell phone. Guerrero fled to Savannah and then to Texas, where he was apprehended by law enforcement about eight miles from the Mexican border. At trial, Guerrero’s defense was that Cray accidentally shot herself during a struggle for her gun. Guerrero testified that Cray threatened him with her gun, that he attempted to get the gun away from her, and that the gun discharged accidentally during the struggle. Guerrero repeatedly testified that he never gained control or possession of the gun as he struggled with Cray and that he did not shoot her intentionally or otherwise. The State presented evidence that Guerrero shot Cray from at least several feet away, that he strangled her before he shot her, and that he had previously made threats against her (both directly and in a conversation with a friend whom he told that he “[m]ight have to shoot his girlfriend” and needed “to know where he could hide a body”). Guerrero does not dispute that the evidence is legally sufficient to sustain his convictions, but consistent with our usual practice in murder cases, we nevertheless have reviewed the evidence and considered its sufficiency. Viewed in the light most favorable to the verdict, we conclude that the evidence adduced at trial is sufficient to authorize a rational trier of fact to find Guerrero guilty of the crimes of which he was convicted. See Jackson v. Virginia, 443 U.S. 307, 319 (III) (B) (99 SCt 2781, 61 LE2d 560) (1979). 2. In his sole enumeration of error, Guerrero claims that the jury could have found that the shooting was justified and, therefore, that the trial court erred when it charged the jury on accident but refused his request to charge the jury on justification.[2] See OCGA § 16-3-21 (a). It is well-established, however, that “[i]t is not error to refuse a justification charge where there is no evidence to support it.” Green v. State, 302 Ga. 816, 818 (2) (a) (809 SE2d 738) (2018) (citation and punctuation omitted). And where the defense “is supported by only the slightest evidence and . . . is inconsistent with the defendant’s own account of the events or with the main defense theory presented at trial,” the failure to give a charge on the defense generally will be harmless in any event. McClure v. State, Ga. (Case No. S18G1599, decided Oct. 7, 2019) (Nahmias, P.J., concurring).[3] Guerrero argues that an instruction on justification was required by Koritta v. State, 263 Ga. 703, 705 (438 SE2d 68) (1994), but evidence was presented in Koritta that “the victim was killed by an act of the defendant committed while the defendant was engaged in an intentional attempt to protect himself.” Id. (Emphasis supplied). See also Byrd v. State, 277 Ga. 554, 559 (4) (592 SE2d 421) (2004) (“Significantly, in Koritta, we specifically held that an inference that the victim was intentionally killed in an act of self- defense was available from the evidence presented.”) (Emphasis supplied). Here, Guerrero’s defense (and evidence) was that Cray shot herself, not that she was killed by his hand (intentionally or otherwise). Conversely, the State presented evidence that Guerrero intentionally shot Cray with her own gun from several feet away, and it did not argue that Guerrero did anything unlawful related to a struggle for the gun. Pretermitting whether the trial court should have charged the jury on justification, it is highly probable that the jury would have reached the same verdict even had the trial court given the charge. In order to find that Guerrero killed Cray but was justified in doing so, the jury would have had to independently concoct a theory of Cray’s death that was inconsistent with the State’s theory of the case, inconsistent with Guerrero’s own account of the events, and instead based upon a combination of inferences from a variety of evidentiary sources, which no witness or lawyer at the trial ever suggested. As a result, any error in the trial court’s failure to charge on justification was harmless. See McClure, Ga. (Nahmias, P.J., concurring). Judgment affirmed. All the Justices concur.