expression
nothing special; no big deal; doesn't matter
Used to downplay something, indicating it is not important, not a problem, or not worth worrying about. Often used in negative contexts or to reassure someone.
See also: どうということもない
この程度のミスはどうということはない。
A mistake of this level is no big deal.
彼が来なくてもどうということはない。
It doesn't matter if he doesn't come.