Key art for the 2026 Japanese BL series Sekigae Shitara, Doyara Ushiro no Otoko ga Ore no Koto Sukirashii
Sekigae Shitara, Doyara Ushiro no Otoko ga Ore no Koto Sukirashii (2026) key art. © Resource Creation. Image via TMDB, shown solely to identify the series being reviewed.

After Moving Seats the Boy Behind Me

CompletedTV Series🇯🇵

What happens

After Moving Seats the Boy Behind Me (Japanese: 席替えしたら、どうやら後ろの男が俺のこと好きらしい, shortened to Sekisuki) is a Japanese boys' love television drama that began on BS Fuji on Friday 7 August 2026 and ran for eight episodes, ending with the finale on 25 September 2026. Each episode fills a thirty minute late night slot at 25:00, which is 1:00 am on Saturday. TV Aichi started its broadcast on 5 August, and FOD released the drama on the same day, two days before BS Fuji began. TVer offered the episodes after each BS Fuji broadcast, starting on 7 August.

The story begins with a seat change and follows two people with opposite personalities. They are Mayama (間山晴), an ordinary young man, and Asamiya Kosei (朝宮光星), who is popular with everyone around him. The drama is framed around the contrast between the two.

It is adapted from the novel of the same name by Mashiro Ito (ましろいと), published by Starts Publishing under its BeLuck Bunko label. Yoshika Nakayama (中山佳香) and Yudai Nara (奈良優大) direct, Kento Goto (後藤賢人) writes the scripts, and the production company is Resource Creation (リソースクリエイション).

Eito Konishi (小西詠斗) plays Mayama and Gennosuke (元之介) plays Asamiya Kosei. Ken Hiramoto (平本健) of DXTEEN plays 榊当麻, and Hayate Iijima (飯島颯) of SUPER★DRAGON plays 常川田光希. The theme song, NPC, is performed by SUPER★DRAGON, and the opening song, 白鯨, is performed by Kimi no Virus.

The cast also took part in a stage event for the drama at TGC teen 2026 Summer, held on 29 July 2026, a week before the first broadcast.

CONTENT DETAILS

Native Title
席替えしたら、どうやら後ろの男が俺のこと好きらしい
Original Title
Sekigae Shitara, Doyara Ushiro no Otoko ga Ore no Koto Sukirashii
Also Known As
席替えしたら、どうやら後ろの男が俺のこと好きらしい, Sekisuki, セキスキ, After Moving Seats, the Boy Behind Me Has a Crush on Me
Adaptation
Adapted from the novel Sekigae Shitara, Doyara Ushiro no Otoko ga Ore no Koto Sukirashii (席替えしたら、どうやら後ろの男が俺のこと好きらしい) by Mashiro Ito, published by Starts Publishing under its BeLuck Bunko label.
Genres
DramaLate-Night DramaRomanceYouth
Themes
BL
Key Themes
Seat ChangeNovel AdaptationLate Night BroadcastStreaming First ReleaseIdol Group CastOriginal Theme Song
Country
Japan
Language
Japanese
Networks
BS FujiFODTV AichiTVer
Seasons
1
Episodes
8
Duration
30 minute broadcast slot
Aired Start
Aired End
Release Year
2026
Production Co
Resource Creation

Where to watch After Moving Seats the Boy Behind Me

FODTVer

Before You Watch

  • Broadcast: BS Fuji aired it on Fridays from 7 August 2026, with the eighth and final episode on 25 September 2026.
  • Streaming first: FOD released the drama on 5 August 2026, two days before BS Fuji.
  • Novel adaptation: The source is Mashiro Ito’s novel, published under the BeLuck Bunko label of Starts Publishing.
  • Credits: Yoshika Nakayama and Yudai Nara direct, and Kento Goto writes the scripts.
  • Leads: Eito Konishi plays Mayama and Gennosuke plays Asamiya Kosei.
  • Music: SUPER★DRAGON performs the theme song NPC, and Kimi no Virus performs the opening song 白鯨.

Reviewed by Renkaze

Several ways in, two days apart

The drama reached viewers through four platforms in a single week. TV Aichi and FOD began on Wednesday 5 August 2026, and BS Fuji and TVer followed on Friday 7 August. FOD carried the episodes first, BS Fuji broadcast them in the 25:00 Friday slot, and TVer offered catch up after the broadcast. The BS Fuji slot is listed as late night 1:00, the usual Japanese way of counting hours past midnight, so a Friday broadcast arrives in the early hours of Saturday.

A short run in a compact slot

Eight episodes of thirty minutes each tell the whole story, from the premiere on 7 August to the finale on 25 September 2026. The late night slot keeps each installment compact, and the weekly pattern gives the run a steady rhythm from the first Friday to the last.

Music from the cast's own groups

Two of the credited actors come from performing groups, and one of those groups sings the theme. Hayate Iijima is a member of SUPER★DRAGON, which performs NPC, and Ken Hiramoto belongs to DXTEEN. The opening song, 白鯨, is performed by Kimi no Virus. Having a group member in the cast while the same group sings the theme ties the screen performance to the soundtrack.

Source and staff

The drama adapts a novel by Mashiro Ito from the BeLuck Bunko label of Starts Publishing. Yoshika Nakayama and Yudai Nara share the direction, Kento Goto writes the scripts, and Resource Creation is the production company. Eito Konishi and Gennosuke play the two leads, Mayama and Asamiya Kosei, with Ken Hiramoto and Hayate Iijima beside them in the cast. The TGC teen 2026 Summer stage event on 29 July 2026 took place a week before the premiere.

Episode guide: After Moving Seats the Boy Behind Me

8 / 8 episodes aired · Completed
EP 1
07 Aug 2026
Aired
EP 2
14 Aug 2026
Aired
EP 3
21 Aug 2026
Aired
EP 4
28 Aug 2026
Aired
EP 5
04 Sep 2026
Aired
EP 6
11 Sep 2026
Aired
EP 7
18 Sep 2026
Aired
EP 8
25 Sep 2026
Aired

FREQUENTLY ASKED QUESTIONS

When did After Moving Seats the Boy Behind Me air?

BS Fuji broadcast it on Fridays from 7 August 2026, and the eighth and final episode aired on 25 September 2026.

Where can After Moving Seats the Boy Behind Me be watched?

FOD released each episode first, from 5 August 2026. BS Fuji broadcast it afterwards, and TVer offered catch up following the broadcast.

Is After Moving Seats the Boy Behind Me based on a novel?

Yes, the novel of the same name by Mashiro Ito, published under the BeLuck Bunko label of Starts Publishing.

Who stars in After Moving Seats the Boy Behind Me?

Eito Konishi plays Mayama and Gennosuke plays Asamiya Kosei, with Ken Hiramoto of DXTEEN and Hayate Iijima of SUPER★DRAGON also in the cast.

Who directed it?

Yoshika Nakayama and Yudai Nara direct, from scripts by Kento Goto.

How many episodes are there?

Eight episodes of about thirty minutes each.

Who performs the music?

SUPER★DRAGON performs the theme song NPC, and Kimi no Virus performs the opening song 白鯨.

What is the short title?

The drama is known in short as Sekisuki.

Written and verified by Renkaze · Last updated 3 October 2026

BLGLFLIX is independent and unaffiliated with the rights holders or platforms named above; streaming links point only to licensed services. Full copyright, correction and takedown policy: Disclaimer.

Themes

The premise rests on a single event, a change of seats, and the title says so. The drama is built around two people who are opposites, so the story draws its energy from the contrast in personality between Mayama and Asamiya Kosei.

The production leans on its source and its music. A published novel gives the drama a defined story to adapt, and the theme and opening songs come from performers connected to the cast and the project.

Interesting facts

  • The drama streamed on FOD two days before its BS Fuji broadcast began.
  • Hayate Iijima of SUPER★DRAGON is in the cast, and SUPER★DRAGON performs the theme song NPC.
  • The BS Fuji slot is listed as late night 1:00 on Fridays, which falls in the early hours of Saturday.

How it was made

A stage event for the drama was held at TGC teen 2026 Summer on 29 July 2026. TV Aichi and FOD began on 5 August 2026, BS Fuji and TVer on 7 August 2026, and the eighth and final episode aired on 25 September 2026.

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