Why I choose Break your Destiny as title?
There are two reasons:

The first one is that Kyohsuke's goal is breaking Kaoru's destiny of death, and also, the destiny of all the espers.
In a future when all of them are dead, Kyohsuke use the rebellion as arm to fight into the present. He's the evil one because all people think that he just wants to make a war, but the real reason is definitely break the destiny!

The second one is that "Break your Destiny" is the title of the third ending theme of the series, a song sang by him, Minamoto and Sakaki.
The meaning of this song is the same: all of the three boy is determinated to change the future. So... whose title could be adaptest than this one?

If you could listen to the song, click here!

And these are the lyrics!

M = Minamoto Kouichi
H = Hyobu Kyousuke
S = Sakaki Shuuji

M) KIMI no TSUYOGARI o gyutto dakishimeta
setsunai yokogao sae zenbu ITOSHII

H) kabe o kowasu tabi tsuyoku naru hito yo
boku no HITOMI ni kurui wa nai

S) massugu sugiru mune no omoi
M & S) dare ni mo makenai kara

M) zettai kimi o hanasanai donna toki mo
mada mienai RASUTO wa boku ga kaeyou
H) akuma mo tenshi ni mo tsubasa wa aru
motto takai sora e to michibikou
M) kore ijou egao o kumorasenai
tsunagaru kibou ga ima yami o hiki saitara
kimi to tomo ni
tobikoeru asu e Break Your Destiny

H) NAMIDA afuretara sotto nuguitai
niteiru SADAME seou chiisa na senanka

M) TSURAI genjitsu ga KIMI o tsudzun demo
hitori ni nanka sase wa shinai

S) kegareta machi ni saki hokotta
M & S) kegare shiranai hana

H) zettai KIMI o nakasenai BOKU dattara
sono DOA o hiraitara hitotsu ni nareru
M) ano toki kawashita yakusoku dake
zutto kono mune no oku hikatteru
H) kore ijou KOKORO o kizutsukenai
kirei goto dake jyanai tsumi o hiki uketara
boku to tomo ni
maki okosu kiseki Break Your Destiny

S) mieru sekai ga subete jyanai koto wo
H) shoumei shiyou
M) ai wa unmei sae koeteku

H) saa, sono tsubasa de boku to ikou
motto takai tokoro e tsurete itte ageru

M) donna toki datte zettai ni KIMI wo hanasanai
mirai wa boku ga kaete miseru

M) zettai kimi o hanasanai donna toki mo
mada mienai RASUTO wa boku ga kaeyou
H) akuma mo tenshi ni mo tsubasa wa aru
motto takai sora e to michibikou
M) kore ijou egao o kumorasenai
tsunagaru kibou ga ima yami o hiki saitara
kimi to tomo ni
tobikoeru asu e Break Your Destiny

Thanks to Gendou Music for the lyrics