１． 呟いてみたりして＞＞呟いてみる+~~(し)たりする. 呟いてみる＞＞呟く+~~(し)てみる. Look up みる for usage of ~~てみる and たり for usage of ~~たりする. ２． 計画 has been lost/ has vanished, but 想い出 wouldn't be lost/erased. リセットはデフォルトではない――。 "Reset" is not "Default"/"Reset" doesn't mean "Default"/"Reset" button is different from "Default" button (so even when you click on a reset button your data won't be defaulted. Your 想い出 etc. won't be defaulted even if you reset your 計画.) The 再起動 in the previous stanza refers to the "リセット" here 新しい絆――。 (We'll have) a new (mental) bond./ (There will be) new ties (that bind us together), after we reset our 計画. 面倒な後悔なら　今は要らないの　って Literally, "As for troublesome regrets, now we don't need them, I say" I say, I (or you) don't need annoying regrets at the moment. I say, we don't need to regret, which is annoying/troublesome, for the present. 　 We reset our 計画, then we don't have to regret, but we'll still have our 想い出.