Otsuka rhymes with:
mazzuca, mazzuca, azuka, bazooka, colaluca, delduca, deluca, delucca, duca, huachuca, laduca, luca, lucca, luka, machuca, marchewka, maruca, mazzuca, molucca, paducah, pagliuca, pokazukha, rabuka, rostuca, sambuca, shinyuka, shizuka, sluka, stuka
Otsuka sounds like:
oates, oaths, oatis, oats, odaiko, oddities, odds, odes, odessa, odetics, odious, odysseus, odyssey, odyssey's, otis, otsego, ottawa's, ottaway's, otto's, otts, out's, outage, outages, outdoes, outgo, outguess, outguesses, outhouse, outhouses, outs, outsize, outtake, outtakes, outweigh, outweighs, outwits, owades