Uchuu De Ichiban Kimi Ga Suki

Minoru meets Sola, a space alien who's come to Earth to find a bride. Since their first encounter, Sola's had his heart set on Minoru as his bride-to-be. Sola's initial advances are sweet, but they gradually escalate to a passionate kiss! (Source: Renta!) Note: includes the one-shot "Koisuru Kaori"