Vasilisa Yuryevna Mostovaya from Seiken Tsukai no World Break. She was a sore loser, which is listed 의해 TV Tropes as dishonorable, and given that she ordered the assassination of Moroha and even deliberately put several of her own goons in danger of being killed 의해 attacks sent towards him, this could make her a dirty coward, also dishonorable.