now wait a sec, didn't he already had his room as his fortress?, oh well, not like he can get any contractors to help him make a better one now.
"Being hero or a villain just depends on the things you choose to destroy to keep on living, still, you should live strong with an unwavering heart" -Dewani90-
Just wait a few chapter and he will be given the ability to allocate an area into a Safe Space through his ability where he has absolute control.