In Two Tones Harmony Chapter, there are some typos for 7st and 6st. It should be 7th and 6th instead, the ordering goes like this 1st, 2nd, 3rd. Then every number after 3 will have -th added. For examples, 5th (fifth), 11th (eleventh), etc. English is not my first language but I just want to mention this.
Thank you for making this amazing website for free.
こんな素晴らしと無料なウェブサイトを作ってくれてありがとうございます! 日本語下手です。
