KANJI
100

Fat dog is big. Can be written with using one kanji which is?

Fat dog is big. 漢字一文字で書けるのはどれですか?

200

The kanji for young girls is 少女 but what is the kanji for old woman?

古い女

300

In the stories, the turtle beats the rabbit but what if they were isekai'ed? Hint: It has to do with their names

物語では亀がウサギに勝つが、もし異世界にいたらどうなるだろうか?ヒント:それは彼らの名前に関係している 

The rabbit cuz the turtle is still charging his 

かめはめ !

400

Frogs come when rain and when the sun comes?
Hint: usage of words

カエルは雨が降ると来るのか、太陽が昇ると来るのか?
ヒント: ことわざ

 蛙が帰る

500

Why was the kanji for "love" (愛) always tired?

「愛」という漢字はなぜいつも疲れているのでしょうか? 

Because it was always "involved" (関)!