Spoiler Warning!! [+/-] Show/Hide Synopsis...
Keiichi meets with Oishi for lunch, and finds out that Rena lied to him about being having only recently moved to Hinamizawa; in fact, she grew up in the village until moving away at the start of grade school. He also learns about the sinister village cult dedicated to the local god, Oyashiro-sama. In the evening, Rena and Mion visit Keiichi, and give him some food to help him get better. However, there is a surprise hidden in the food... The next day, a hit-and-run attempt is made on Keiichi on the way to school, and he threatens Rena (who is apparently unaware of yesterday's 'surprise') with a baseball bat on the way home. She tearfully tells him that he is acting "just like Satoshi was" before he "transferred out." Earlier, Keiichi learned from Oishi that Satoshi Houjou was one of the Watanagashi disappearances...