兄「くっそう、また負けた～」 妹「へっへ～、アンタ10回負けたから罰ゲームね♪ そうだなぁ……あれ、あの時のもっかい言って……」 兄「あの時って……まさかアレか！？お前鬼か！？」 妹「いいから言って！」 兄「……お、俺は妹が、妹が……大好きだ～！」 妹「うっわ～、キモ～イ♪」 兄「ぐっ……（悪態つくならそんな嬉しそうな顔すんなっての！）」───5話終了後のイメージで。それにしても女子中学生にエロ同人誌を読ませて説得の一助にするとかどんな判断だｗ　一歩間違えば翌日に「男子高校生、女子中学生に猥褻な同人誌を読ませて関係を迫る」とか「少年は、妹とその友人の少女を仲直りさせたかった等と意味不明な供述をしており……」とか報道されててもおかしくない蛮勇ですよ。

Bro: Darnit, I lost again.
Sis: Hehe~ That's 10 losses so it's time for your penalty game ♪ Let's see... yeah, I want you to say that again.
Bro: That? You wouldn't! ... you little monster.
Sis: Just say it!
Bro: ... I l-love my... my little sister!
Sis: Eeeew, gross♪
Bro: Grr... (If you're going to respond like that don't look so happy doing it!)
This is what I imagined happening after episode 5. Anyway, what kind of decision is that to help persuade a middle school girl by making her read a pornographic doujinshi. One false move and it'll be "Male high school student makes middle school girl read obscene doujinshi in order draw her closer to him" and "The young man gave incomprehensible testimony about repairing the relationship between his sister and another young girl" and other such reports, all due to his recklessness.