After pondering for a long time, he finally made the decision to take as much responsibility as he could. He would try everything in his power to give the best for his child. But things beyond his control, like L's attitude and the girl's decision to leave the child... he could only leave them to fate.
He would make an agreement with L to arrange their lives together for the next five months, only until the child was born. He would make sure his child would get all the best, which was only right for a descendant of the Schneider family.
Unfortunately, he was already disguised as a poor person, so he could only invite L and his future child to live in a simple place like this modest apartment. L would suspect him if he were to take her to the penthouse. He couldn't think of an appropriate reason as to why he could live in such a luxurious residence.
He also didn't want L to suddenly accept his proposal and be willing to marry him just because of his wealth.