I think Takahiro was selfish. He needed love from his father but didn't get enough so he used Jack as a substitute. Shinkai sensei, the father, although he told his son to be free, he used his last kiss to captivate Takahiro. Jack could have shot the selfish man, but instead used his skill to teach him a big lesson - that he would not always come for him. This manga has its originality just like other sensei's pieces, but it's a lot less pleasant. That's why it got rated really low comparing to the other. Despite all that, this one represents "Japanese drama genre" the best... damn those idiots exist when it comes to life and love...
I think Takahiro was selfish. He needed love from his father but didn't get enough so he used Jack as a substitute. Shinkai sensei, the father, although he told his son to be free, he used his last kiss to captivate Takahiro. Jack could have shot the selfish man, but instead used his skill to teach him a big lesson - that he would not always come for him. This manga has its originality just like other sensei's pieces, but it's a lot less pleasant. That's why it got rated really low comparing to the other. Despite all that, this one represents "Japanese drama genre" the best... damn those idiots exist when it comes to life and love...