@kumaAh. Fact is, I had interpreted Touka's question as genuine, not rhetorical. Hence my confusion. I'm not a English mother tongue speaker, so sometimes I misunderstand. So this means Shion knows - or believes he knows - something we don't about Anri? It's weird, since we read about Anri's motivations quite explicitly...
@Geany who know.... touka accused that shion know anri motive.... next chapter should answer... we does know, however, touka left in blind... that's the whole anri reasoning... hence why shion know something make everything anri trying is useless... so, then how, and why?