In a world with existential issues, inequalities/injustice are (re)emerging in varying degrees around the globe, and yet, each of us strives to sustain our life with our own disappointments/griefs and desires/hopes. Then, identity formation research should elucidate how a human being makes sense of multifaceted voices/dimensions ('selves' and '(social) identities') and what propels each to sustain/envision one's desires/hopes in the future. Thus, based upon the legacy of identity-related research in applied linguistics, we present longitudinal research by a phenomenological approach focusing on 'international students' in Japan. In developing the approach, we utilized translanguaging as a holistic conceptualization of human communication and Interpretative Phenomenological Analysis as methodology (interview analysis contextualized with observation and on/off line correspondence data). As a result, the first author interpreted that each student's life theme/moral aspiration served as a pivot around which various categories/features revolved (solidified/loosened). In such dynamic relationalities, perceptions/ideologies towards named language(s)/identity categories transformed. We argue it is important to interpret why and how each uses/creates categories/labels/binaries as reference points in expressing oneself--not as objective/scientific but as (inter)subjective evidence.