Sacchan, Boku wa.

It starts with a college student named Katagari who is in tokyo going to college while his girlfriend Sa Chan is back home attending the local university. Katagari seems lost and lonely and falls to the seduction of his married next door neighbor Shino. His female classmate who also has feelings for Katagari finds out and gets mad. Later Katagari confesses his misdeed to Sa Chan and then cuts off Shino. By that time it's too late as Shino's husband has been watching the whole thing on his computer and Sa Chan breaks up with Katagari. Just when Katagari thought that maybe his troubles would be over Shino's husband blackmails him into paying 1 million yen for the transression. He made him pay it over 4 years to torture him. In the end a little girl approaches him and introduces herself as Na Chan. Little does Katagari know that she is the daughter of Shino as he just moved into the same condo building as her. Makes you wonder why Shino name her daughter that . Could he be the love child of Katagari? The other thing that bothered me was when they had the intimate scenes it looks like it wasn't a problem when it was shino and Katagari but when it was Sa Chan you only saw her back. Was she an underage actress? I would like to know if that was the case they should have casted someone else that was age appropriate for the role.