What manga chapter does the anime Aishiteruze Baby end on?

As the title says, I just finished watching Aishiteruze Baby the anime and want to see how the manga ends, however I dont know what chapter the anime ends on and the manga continues. The end of the anime for those who havent watched it but have read the manga ends with Kokoro, Kippei and Yuzuyu all sleeping over at Kippei's house in his bed. Kippei's sister went to go see Yuzuyu's mother and she found the book of days she hasnt cried...then Kippei's sister is showin going home and thats pretty much the ending of the anime they gave us.

So if anyone knows what chapter this happens in the Manga please let me know.

Thank you for your time in reading / responding,

Grant