Here are two reference books, perfect for building a solid foundation in English. [Set Contents] • Koko Eibunpou wo Hitotsu Hitotsu Wakariyasuku (Understandable High School English Grammar) (with writing) • Hijii Manabu no Zero kara Eibunpou (Manabu Hijii's English Grammar from Zero) ✍️ Condition: • Koko Eibunpou wo Hitotsu Hitotsu Wakariyasuku has some writing in it, but it doesn't interfere with studying. • The other book is almost new. ✅ Key Points: • Recommended for those who want to solidify their grammar basics. • Shipping included (using Rakuraku Mercari delivery). • Please consult if you want to buy them separately. • Price negotiations are also welcome.