FL shamelessly intrudes on the ML's life

Like maybe she's really young, yet intrudes and stays in his apartment because she has a problematic relationship with her parents or something similar. Or where she's basically the daughter of the ML's villain, however she feels bad and takes his side, or similar. Or the ML is a nice neighbor uncle or similar. 

• +1 Hotel del Luna 
• +1 It's Okay to Not Be Okay 
• Crash Landing on You
• Because This Is My First Life - "shamelessly" isn't quite right though. She's generally very polite and considerate while intruding.
• Story of Yanxi Palace
• Dream High
• Hello Monster
• The Master's Sun
• Good Morning Call
• My Love from the Star
• To The Beautiful You
• You're Beautiful
• K-POP - The Ultimate Audition