In season 1 episode 8 of Kaguya-sama: Love Is War, Miyuki's sister Kei and Chika say to each other 'konnichi sappo'. (A YouTube video showing the scene)
What does this mean?
In season 1 episode 8 of Kaguya-sama: Love Is War, Miyuki's sister Kei and Chika say to each other 'konnichi sappo'. (A YouTube video showing the scene)
What does this mean?
It is kind of difficult to translate/give this expression a meaning since it is a self-created introduction, but...
Based on the original manga, the wording is こんにち殺法 (konnichi-sappou), a portmanteau of こんにちは (konnichiwa) + 殺法 (sappou), which then is replied with こんにち殺法返し, a portmanteau of konnichiwa + sappou + 返し (-gaeshi).
According to Jisho, sappou means "way of murdering; killing method; way of using a sword" while kaeshi (read as -gaeshi here) means reversal; return. 〇〇-sappou is often used as a killer technique name, while adding -gaeshi to it means the counter for such technique.
Usage of sappou used in this way is kind of rare. 円月殺法 (engetsu sappou) was a popular technique coined by Renzaburō Shibata in his novel series Nemuri Kyoshiro (a YouTube video demonstrating the technique in real-life competition). On the other hand, the usage of -gaeshi is more common, as can be seen in Judo techniques.
So, if trying to give meaning to these expressions, then perhaps "die to/with hello!" and "counter to/with hello!" might be suitable...