白石さん、なんとも積極的なアクションの女性(ﾟДﾟ)

水着選びは流石にヤラれましたね(>д<)

Mis Shiraishi definitely has some reason to hang around Seihiko, ether she likes him, or she knows him from the past, and he doesn't recognize her, or could she be a friend of his ex? There's only one reason a girl will show off her body to a boy in a string bikini in a store without being embarrassed, the beach is a different story, than chose a modest swim suit, and inviting him and his friends to the beach in the summer, when she couldn't get him alone.

浮気が〜って展開にしたいのは分かるけど付き合ってからなんの断りもなく異性と2人で出かけるのは主人公の評判落すだけやからやめた方がいい

大型商業施設に買い物に出かけて
→大型商業施設へ買い物に出かけて
→大型商業施設まで買い物に出かけて

白石ちゃんと放課後水着お買い物デート？！白石ちゃんも水着を選ばせるということは……？