Whenever he walked by her flat, he would always ask if her kids had eaten and how they were doing in school.
Though there was the occasional racket in the middle of the night in his home, Ng Siang Hai was by and large a "caring and peaceful" man, said his next-door neighbour, Madam Ranjini.
Except for one day early last year, when, in a fit of anger, the 24-year-old threatened Madam Ranjini's tenant with a chopper during an argument.
That tenant was Mr Subramaniam Muruganantham, 46, a deliveryman.
The argument, over a pet Maltese, escalated into a scuffle between Mr Subramaniam and a knife-wielding Ng.
The incident happened at Block 742, Yishun Avenue 5, in the common corridor between the units.
Ng was charged with criminal intimidation yesterday and sentenced to two weeks' jail.
Both Mr Subramaniam and Madam Ranjini regret how much the incident has spun out of control.
Speaking to The New Paper at her flat yesterday evening, Madam Ranjini blamed it all on a misunderstanding.
The 31-year-old said: "Last year, my husband let our dog keep Ng company as he lives alone.
"But Ng might have thought we were giving it to him."