MYSTERY>>>
One day, Tatsuya Okamoto was hit the left back of the head, and killed at his home. The presumptive death time is from 12:30 to 14:00. The suspect is Makoto Hiiragi who is his nephew. It seems that Makoto who is only relative killed for his inheritance. But, He has alibi. On that day, he dated with his girlfriend Tomoko all the day.
The following is the conversation between her and the detective.
T=Tomoko D=detective
T "On the day, we met in the morning and went to see a movie, drove and then dined."
D "Well... What did you doing between 12:30 and 14:00?"
T "We were seeing the movie just at the time."
D "Were you with him all the time?"
T "Let me see... yes, when I took a seat and took a sip of juice, I oddly calmed down and I had slept for a few minutes. From the kiss scene of main character to the scene of the gunfight, so I think it was for about 15 minutes."
D "I see, and where did you drive?"
T "We went to the sea. But a traffic jam prevent us from arriving at the restaurant in time. Though it was already in July, I felt the daytime went on very quickly."
D "Thanks."
It takes 20minutes to go to Tatsuya's house from the movie theater.
How do you think Makoto killed Tatsuya?

