Who knows what movie this is?

"White Rabbit Butterflies" (formerly known as:) is a film adapted from the comic works of the same name by Japanese cartoonist Yu. Directed by Sabu, starring Matsuyama Kenichi and Mana Ashida. It tells the story of a 30-year-old bachelor raising a 6-year-old aunt. Kawachi Daikichi (Ken'ichi Matsuyama), a 27-year-old single office worker, goes back to his hometown to attend his grandfather's funeral, but unexpectedly meets his 6-year-old illegitimate daughter Shikaga Rin (Mana Ashida). Daji objected that relatives should send Lin to an adoption agency and put forward the idea of adopting her. So they began to live under the same roof. The plot is dull and warm.