Nobody

I guess red characters. 肥前國住人近江守忠吉作刀齢三百有余年

鐔縁頭小柄 – Tsuba, Fuchi-Kashira, Kozuka 銘□　知昆 – Mei: Tomoyasu 素銅地　枝葉毛彫 – Suaka-ji, Leaves and branches, Kebori 鐔　長丸形　竪弐寸弐分　横壱寸九分 – Tsuba: Oval shape, Long axis 2-sun 2-bu, Short axis 1-sun 9-bu 縁　刃宗　壱寸弐分五厘 – Fuchi: Long axis 1-sun 2-bu 5-rin 頭　刃宗　壱寸壱分五厘 – Kashira: Long axis 1-sun 1-bu 5-rin 小柄　長サ　参寸弐分五厘 – Kozuka: Length 3-zun 2-bu 5-rin 右正作也 – These items are genuine. 昭和丗年七月七日 – Showa 30th year, 7th month, 7th day 草堂 – Sodo

Thanks @Bugyotsuji. For the tsuba in question, Minbu seems to be correct. Myōchin Minbu ..... 明珎民部 ..... In the following old thread about 明珎民部紀宗定, the mei was read as Myochin Shikibu ...... at first, but later it was thought to be Myochin Minbu. @SteveM said "I also think this is Minbu (民部) by the way. Wakayama's reference lists both Shikibu (式部) and Minbu as possibilities for this artist, but to me it looks like Minbu..." in his comment.

What is the motif of the tsuba? Can you show us the both sides? I think the information might help to identify the kanji.

I enhanced the image. It looks like 則定 (Norisada) or 則宗 (Norimune) to me.

As for the left image, 明珎式部民部 – Myochin Shikibu Minbu 紀宗定作 – Ki no Munesada saku Where is the other unknown kanji on the right? Edit: correct reading. (Feb. 12, 2025)

(?) 松岡大尉 - Lieutenant Matsuoka

According to Wakayama, it reads Terumsa (英昌).

Rapping specification 柄平巻 – Tsuka hiramaki

□□関岡田兼定作之 - ?? Seki Okada Kanesada made this. The first two characters may be 濃州 – Noshu.

雪華 (sekka) - Snowflake

敏周 - Toshichika

You should study Ōtsuki school as @MauroP suggested.

I am afraid that you are not happy to know. I guess that the defaced part is 米英撃滅之剣 (A sword for the destruction of the US and Britain).

大龍斎光興作 – Tairyusai Mitsuoki saku 黄銅地角形鐔 – Brass, square shape tsuba 表富岳図 – Front: Mt. Fuji 裏三保の松原 – Back: Miho no Matsubara 文政八乙酉三朝之内彫光林五世嫡流と横に銘あり新年仕事始めの意と考へられる - There are inscriptions 文政八乙酉三朝之内彫 (Carved within the New Year’s Day of Bunsei 8th Kinoto-Tori.) and 光林五世嫡流 (The 5th main line generation of Korin) on its sides, and it seems to be the first work of the year. 名作也 – It is a masterpiece [Sides] 文政八乙酉三朝之内彫鐫 - Carved within the New Year’s Day of Bunsei 8th Kinoto-Tori (1825). 光林五世嫡流大龍斎光興 - The 5th main line generation of Korin, Tairyusai Mitsuoki

Blade length is 93.2 cm. Other details are unknown. Ref. 太刀銘　横山加賀介藤原朝臣祐永 – 津木美術コレクション

I found another tachi mei, though the image is not fine.

Deactivated firearms are allowed, but they are absurdly expensive. FYI: 無可動実銃 - Google 検索

The latest change of the law was made in June 2024, which was a minor change about guns. There have been occasional changes since the law was issued in 1958, but basic points about blades have not changed. I believe that the shop staffs do not understand the actual Firearm and Sword Possession Control Law in Japan. Actually, the law does not specify such details. However, it is also true that the police regulations on blades are becoming stricter these days. So, I guess that the dojo’s new rules are based on recent police guidance.

鉄元堂 - Testugendo 尚房 - Naofusa ( I am a little unsure about 房.)

小柄 - Kozuka 源三位 – Genzanmi (Ref. Minamoto no Yorimasa - Wikipedia ) 鵺退治図 – Nue taiji zu (Ref. Nue - Wikipedia ) 赤銅 - Shakudo 魚子地 - Nanakoji 高彫 - Takabori 色絵 - Iroe 裏哺金 – Urahukumikin 無銘傍後藤 – Mumei waki-Goto 昭和卅九年冬 – Showa 39th year, winter 寒山誌 – Kanzan wrote

It is a fake with a Japanese style name on the nakago. 地井武男 Takeo Chii - Wikipedia

The characters on the blade are 菊一文殊包永作 (Kiku ichi monju Kanenaga saku).

No. 4681 四 (yon) - 4 千 (sen) - 1000 六 (roku) - 6 百 (hyaku) - 100 八 (Hachi) - 8 十 (ju) - 10 一 (ichi) - 1 番 (ban)

琴桂(柱?)透鐔 – Kotoji sukashi tsuba 鉄地 丸形 小透 – Iron, round shape, open work 銘 武州住知㳟 – Mei: Bushu ju Tomoyasu (reading?) The handwritings on the envelope are the same information. Kotoji is usually written as 琴柱. I do not know if it is common to use 桂 instead of 柱. Kotoji (bridges for Koto strings)