Thanks for playing the game and looking at the website's content!
Also thanks for the comments on the gameplay, there's definitely small improvements that could be made while also staying true to the fact that our diving protagonists aren't well trained for this kind of situation haha
About the name 'Ippan', it is Japanese meaning 'regular' or 'normal', to reflect the fact that the players are just simple diving students and not top-grade commandos. I kept it in Japanese just because it rolled off the tongue pretty well and is quick/easy to write!
So if you want to translate the name of the game, you can say 'Aqua Regular'!
Thanks again for the positive feedback and for spreading the word with others!