Research Manga!

Please let me know if anyone knows this manga,

about a little boy who lives alone in an apartment, one day when the little boy wants to eat dinner suddenly a man appears from the roof to make the roof of the little boy's apartment through the room above. The man who lives in the apartment even eats the little boy's dinner. When the man realizes that the child is alone in his apartment and that the child is too kind and naive, the man begins to protect the child through the hole in the roof that the child paid for dinner. Their relationship began to grow closer. (≧∇≦)ノ