python3, 105 bytes

Result

AC

Duration

880ms

Code [DL]

i=input().find('T')
while 1:
 print(' '*i+'*')
 d=input().find('K')
 if d>=0:print(' '*d+'*'*(i-d+1));1/0

stdin

                     T                            
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
               K                                  

stdout

                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
                     *
               *******

stderr

Traceback (most recent call last):
  File "/volume/CODE", line 5, in <module>
    if d>=0:print(' '*d+'*'*(i-d+1));1/0
ZeroDivisionError: division by zero

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffdfaf77280 /* 7 vars */) = 0
13    execve("/usr/bin/python3", ["/usr/bin/python3", "/volume/CODE"], 0x55bfbb554d50 /* 7 vars */ <unfinished ...>
12    execve("/bin/cat", ["cat", "-"], 0x55bfbb554d38 /* 7 vars */) = 0
12    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    <... execve resumed> )            = 0
13    +++ exited with 1 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=1, si_utime=0, si_stime=0} ---
11    +++ exited with 1 +++