Why don't you join in the conversation?
Kaiwa ni kuwawareba.
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
to be added to; to be appended; to join in (e.g. a group of friends); to participate; to increase (e.g. heat); to gain in (e.g. influence); to grow; to gather (speed); to be applied (e.g. heat, pressure); to be exerted