Park theatre; Lyttleton, LondonIns Choi's disarming Korean corner store comedy makes a timely return to the stage; a show of migrant stories feels more like ritual than chronicle; and a new era dawns at the RSC Don't think because it twinkles, it can't cut. Or that a guessable happy ending rules out revelations. Kim's Convenience disarms with darting charm, then gently nudges audiences to look at their preconceptions…
