お返事まだカナ？おじさん構文！ (Ohenji Mada Kana? Ojisan Koubun!) is a niconico & vocaloid track by upstart producer 吉本おじさん (Yoshimoto Ojisan), featuring the VoiSona voicebank 雨衣 (Aoi). The song's title is itself written in the exaggerated, emoji-laden style of "ojisan koubun" (おじさん構文), a Japanese internet meme that caricatures the overly enthusiastic, punctuation-heavy texting habits stereotypically associated with middle-aged men. Beyond its parody premise, the track achieved remarkable viral velocity: it was uploaded to niconico and YouTube just one day after the public release of the 雨衣 voicebank, an unusual turnaround that helped it cut through a crowded field of user-generated content. It became the first song using 雨衣 to reach hall-of-fame (殿堂入り) status on niconico, and later crossed both one million and ten million views on YouTube, establishing itself as a breakout hit in the VoiSona ecosystem. 吉本おじさん debuted as a Vocaloid producer on February 21, 2025, with "かわいいだけのおんなのこ," making this his second published work, a fact that underscores the scale of the song's viral reception. The cultural footprint expanded further when しぐれうい (Shigure Ui), the VTuber whose voice and character design served as the basis for the 雨衣 voicebank, publicly acknowledged the track and released her own cover version. A novel adaptation of the song was also published. In maimai DX, the song joined the library as part of the CiRCLE PLUS version update on April 3, 2026, classified under the niconico & vocaloid genre. The MASTER chart (level 13+) was designed by はっぴー, while the EXPERT chart was designed by Luxizhel. All charts are currently exclusive to Japanese-region cabinets.