実家帰ったら、弟がドアの枠に頭ぶつけてた。 半年前は僕の肩くらいだったのに。 うちの弟マジでかいん新。 誰この新人。

The story revolves around the daily life of 14-year-old Takeru Nakahara, who lives with his 11-year-old sister, Rie. Rie is a talented and passionate young manga artist who dreams of becoming a professional in the industry. Takeru, being the older sibling, often finds himself taking on a caretaker role, supporting Rie's aspirations while navigating his own adolescence.

In gaming communities, when a character receives a dramatic buff (size increase, power increase), players mockingly say, "Note: This character is new." Applying "new" to a human implies that your brother installed version 2.0 overnight.

You open your laptop after a weekend away and see a 5GB system update. “Uchi no otouto maji de dekain new.” (My little brother… it’s seriously huge new.)