  It has been consensus that star-disk systems accrete most of their mass and
angular momentum during the collapse of a prestellar core, such that the
rotational direction of a system is equivalent to the net rotation of the core.
Recent results, however, indicate that stars experience post-collapse or late
infall, during which the star and its disk is refreshed with material from the
protostellar environment through accretion streamers. Apart from adding mass to
the star-disk system, infall potentially supplies a substantial amount of
angular momentum as the infalling material is initially not bound to the
collapsing prestellar core. We investigate the orientation of infall on
star-disk systems by analyzing the properties of accreting tracer particles in
3D magnetohydrodynamical simulations of a molecular cloud that is (4 pc)$^3$ in
volume. In contrast to the traditional picture, where the rotational axis is
inherited from the collapse of a coherent pre-stellar core, the orientation of
star-disk systems can change substantially during the accretion process. In
agreement with previous results that show larger contributions of late infall
for increasing stellar masses, infall is more likely to lead to a prolonged
change in orientation for stars of higher final mass. On average, brown dwarfs
and very low mass stars are more likely to form and accrete all of their mass
as part of a multiple system, while stars with final masses above a few 0.1
M$_{\odot}$ are more likely to accrete part of their mass as single stars.
Finally, we find an overall trend: the post-collapse accretion phase is more
anisotropic than the early collapse phase. This result is consistent with a
scenario, where mass accretion from infall occurs via infalling streamers along
a preferred direction, while the initial collapse is less anisotropic albeit
the fact that material is funneled through accretion channels.
