Since I'm getting used to some advanced kanji, 目 can mean eyes as Utsuho said, or just "eye" as Satori-san thought it meant. But in the last panel, Koichi-chan's eye is peeking.
KoishiAre you serious!?Come here!! Lady Koishi finally opened her eyes!!You were talking about swimming!?To think that the day that child opens her third eye again finally comes......Eh!? No way!?Aaaah...Huuuuh?Did you misunderstand something?