I got this idea for catnip from a fan fiction called 'The Nine Lives of Kyo' by lightningpelt. So I decided to add it in to the fun. Thank you. Oh, and IDNOFBAILTBBOLPIC (I Do Not Own Fruits Basket, Although I'd Like To But Because Of Legal Purposes I Can't) I stole that from 'The Talk' by Serena Scarlet.
-Chapter Three: Catnip

The orange cat stumbled out of the pile of girls. As Tohru picked up the uniform Kyo had dropped, out dropped a potted plant from her bag. Kyo's cat eyes widened. She quickly picked it up and took Kyo back to her room with Yuki and Yori. As no one was there yet, and coincidentally enough, Kyo turned back and Tohru threw him his clothes, not looking. Kyo put his clothes on and held out a hand for the potted plant. 'Oh, here, Kyo! A welcome gift from Yuki! Not Sohma-san, of course!' Tohru said, handing over the plant. Kyo began playing with the green leaves. As Yuki came in, she stared at Kyo playing with the leaves. 'Cross-san, what plant is this?' he asked dreamily. 'It's catnip.' replied Yuki, smiling. 'Do you like it?' 'Yes, I looooove it!' he squealed, burying his face in the emerald green leaves. Yuki stared at him with her eyebrows raised. Tohru started panicking. 'Um…Yuki-san, please don't ever give Kyo catnip. Uh…he's addicted to it.' she said. Yuki nodded. 'I…can see that…' Kyo rolled over on the carpeted floor. 'Tohru…you're so cute…' he mumbled. Tohru turned a deep shade of red. 'Eh! No…it can't be!' she mumbled. 'Really…' he said, still playing with the leaves. Tohru blushed an even deeper shade of red. Kyo's head lolled back onto the back of his chair. Tohru put her hand on his head and pushed it back up. And…of all things he could've done, he purred. Yuki freaked out. 'Purring?' she asked. 'Ahhh…it would be best if you leave for a while!' said Tohru. Yuki didn't think twice. She left. Kyo pushed his head against her hand. He purred again. Tohru grinned at him and he hugged her. Poof. A little cat once more. Being a little cat, Kyo got even more addicted to catnip. He started running around the room, pausing sometimes to rub his kitty head against her hands. She kept giggling whenever he did it. After an hour, he slumped onto a chair. 'Tohru?' Kyo said sleepily. 'Yes Kyo?' Tohru asked, looking at how peaceful he looked. 'I love you.' he said, falling asleep on the chair.

Sohma had just watched this scenario on a hidden camera he placed in Tohru's room to take care of her. He laughed when she revealed the catnip, panicked when Yuki found out, laughed even harder when Kyo turned into a cat. Finally he panicked when Kyo told Tohru that he loved her, and he fell asleep. Tohru sat in the middle of the room, her head in her hands. 'Oh…my…gosh…' she sighed.

The next day, when Kyo woke up, he had a headache, a hangover and was in Tohru's room. 'What..?' he asked. 'Hi, Kyo! Good morning!' Tohru said, poking him in the shoulder. 'Good morning…' said Kyo sleepily. 'What happened last night?' 'Catnip happened last night.' Tohru sighed. Kyo freaked out. 'Catnip..?' he groaned. 'Yeah…you said some really…um…nice but sort of embarrassing things.' Tohru said, blushing rose red. 'Tohru…what did I say?' asked Kyo darkly. 'You...you said you loved me.' Tohru said. Kyo gaped and slammed his head on his lap. The door opened and a voice came from behind.
'So, stupid cat, I saw everything. You're an idiot.'
-
No rewards if you guess who that was! XD