Big Brother Naija Season 10, Week 4, was a whirlwind of drama, nostalgic reflections, and significant developments that kept housemates and viewers captivated. The week saw a change in leadership, with Zita claiming the coveted Head of House (HOH) title, following Doris’s brief interim reign. Zita, making history as only the second female HOH this season, immediately set a tone of an 'eldest sister' during the special Nostalgia Week, managing chores and navigating occasional housemate rebellions.

The week began with a morning of intimate confessions and emotional exchanges. While Kaybobo led exercise, breakfast sparked a heated argument when Imisi was accused of hiding bread. Sultana confided in Kuture about a prior kiss with Koyin, complicating her situationship with Jason Jae. Rooboy contemplated trust and personal growth, and Victory offered a heartfelt apology to Bright Morgan regarding his bluntness about feelings for other women. Dede and Mide clarified their boundaries, and Jason Jae finally closed the chapter on his lingering friendship tensions with Dede.

Nominations for possible eviction kicked off with the frantic search for immunity-granting red envelopes. After a dramatic scramble, Koyin, Imisi, Mensan, and Victory were the last four standing, with Kaybobo ultimately winning a strength challenge against Koyin. HOH Zita, Most Influential Player Jason Jae, and House Snail Rooboy were exempt, with Rooboy automatically nominated. Utilizing the Tree of Trinkets, Zita saved Mensan and Faith, but 20 housemates remained vulnerable, pushing the prize pot to ₦25 million thanks to Biggie’s reward.

Kitchen tensions escalated with a heated exchange between Victory and Kaybobo over fish, while Imisi received a stern warning about cooking her own meals. Doris offered Gigi Jasmine advice on navigating 'negative energy' within the house, highlighting the pervasive gossip and simmering rivalries that continued to test friendships and trust levels.

Inside the Diary Room, housemates revealed their inner struggles. Imisi expressed exhaustion and distrust, while Denari reflected on his performance and observed growth in others. Gigi Jasmine admitted to feeling lonely despite her cheerful exterior, and Rooboy declared he was 'no longer the good guy,' frustrated by power struggles and food politics. Ivatar warned of hidden 'snakes,' and Konyin celebrated his first birthday inside the house, marked by cake, games, and laughter.

Nostalgia Week brought a wave of childhood memories and sibling-like dynamics. Zita, in her 'eldest sister' role, grappled with managing chores amidst complaints and subtle acts of rebellion from housemates like Faith and Big Soso. Mide earned the playful title of 'Kitchen Police' for her vigilant oversight, yet underlying tensions remained visible.

Housemates also shared significant personal histories during Nostalgia Week: Bright Morgan achieved a childhood dream acting with Patience Ozokwo; Big Soso launched a UK restaurant; Dede bought her mum a home; Denari found God; Doris gained online fame; Faith became a doctor; Gigi Jasmine had her first international DJ gig; Imisi completed studies independently; Isabella relocated her son; Ivatar completed DJ courses; Jason Jae had music event success; Joanna achieved early independence; Kaybobo excelled academically; Koyin learned to swim; Kola progressed to a senior lead role; Kuture experienced family pride; Mensan graduated LLB; Mide earned her first million; Rooboy had academic and entertainment wins; Sultana launched a beauty business; Tracy showed leadership growth; Thelma Lawson launched a skincare store; Victory self-funded education; and Zita celebrated academic triumph.

Despite critiques of their SuperSport quiz, Nigerian Idol task, and theatre performances, Biggie rewarded the housemates’ collective courage, effort, chemistry, and showmanship with a full-house wager win, providing a much-needed morale boost after a challenging week. Post-party confessions after the Saturday Night Turn-Up with DJs Flo and Wanni x Handi saw housemates like Dede, Jason Jae, Kola, Isabella, Mide, Bright Morgan, Joanna, and Victory confronting lingering issues, alongside lighthearted moments such as dancing with MunchIt boxes and Kaybobo cooking shirtless.

Sunday’s Live Show culminated in a dramatic double eviction, with Victory and Gigi Jasmine exiting the house, bringing an end to the 'royal' storyline. The show's host, Ebuka Obi-Uchendu, once again made a significant fashion statement. Known for his iconic outfits, Ebuka paid tribute to royalty by wearing a stunning traditional Northern Nigerian royal outfit. The ensemble featured a flowing navy blue robe with intricate light blue embroidery and decorative trim, showcasing classic Hausa spiral and geometric patterns. This was complemented by an elegant white turban (rawani) finished with a striking white feather, symbolizing status and prestige. Ebuka dedicated this regal look as a tribute to the late HRH Muhammadu Maccido, the 19th Sultan of Sokoto, who was officially turbaned in April 1996 and held the title until his passing in October 2006. This week’s combination of intense house drama, personal revelations, and a powerful fashion tribute made Week 4 an unforgettable segment of Big Brother Naija Season 10.