Hello Kitty no Shiawase no Tulip (Series)

Kitty falls ill and has to stay home with her mom while her sister and Papa and classmates get to go on a field-trip. They encounter a motorcycle riding man who helps out both Mimmy and Kitty. Everyone seems to think he's a bad person but he just has a sad past. Kitty and Mama hear out his story and come to find his lover where she planted many tulips, his favourite flower, while he was away for a long time.