Saenai Heroine no Sodatekata ♭: Koi to Junjou no Service-kai

Blessing Software needs visual references for the poolside scene in its game, and Eriri decides Megumi would make the perfect swimsuit model for the heroine. Megumi refuses to be singled out, agreeing only if every member of the group joins the research under the same conditions.

The team heads to a luxury hotel, where an assignment that was supposed to help development quickly becomes a day of swimming, teasing, rivalry, and distraction. Even with Eriri and Utaha finding fresh reasons to clash, the group somehow manages to turn the outing into useful material for their project.